c語言100行代碼
⑴ 跪求100行左右的c語言簡單代碼,大一水平就行,什麼類型都可以。
//學生成績管理系統C代碼
/*頭文件*/
#include<stdio.h>
#include<dos.h>
#include<stdlib.h>/*其它說明*/
#include<string.h>/*字元串函數*/
#include<mem.h>/*內存操作函數*/
#include<ctype.h>/*字元操作函數*/
#include<alloc.h>/*動態地址分配函數*/
#defineLENsizeof(STUDENT)
typedefstructstu/*定義結構體數組用於緩存數據*/
{
charnum[6];
charname[5];
intscore[3];
intsum;
floataverage;
intorder;
structstu*next;
}STUDENT;
/*函數原型*/
STUDENT*init();/*初始化函數*/
intmenu_select();/*菜單函數*/
STUDENT*create();/*創建鏈表*/
voidprint(STUDENT*head);/*顯示全部記錄*/
voidsearch(STUDENT*head);/*查找記錄*/
STUDENT*delete(STUDENT*head);/*刪除記錄*/
STUDENT*sort(STUDENT*head);/*排序*/
STUDENT*insert(STUDENT*head,STUDENT*newnode);/*插入記錄*/
voidsave(STUDENT*head);/*保存文件*/
STUDENT*load();/*讀文件*/
/*主函數界面*/
main()
{
STUDENT*head,newnode;
head=init();/*鏈表初始化,使head的值為NULL*/
for(;;)/*循環無限次*/
{
switch(menu_select())
{
case1:head=create();break;
case2:print(head);break;
case3:search(head);break;
case4:head=delete(head);break;
case5:head=sort(head);break;
case6:head=insert(head,&newnode);break;/*&newnode表示返回地址*/
case7:save(head);break;
case8:head=load();break;
case9:exit(0);/*如菜單返回值為9則程序結束*/
}
}
}
/*初始化函數*/
STUDENT*init()
{
returnNULL;/*返回空指針*/
}
/*菜單選擇函數*/
menu_select()
{
intn;
structdated;/*定義時間結構體*/
getdate(&d);/*讀取系統日期並把它放到結構體d中*/
printf("pressanykeytoenterthemenu......");/*按任一鍵進入主菜單*/
getch();/*從鍵盤讀取一個字元,但不顯示於屏幕*/
clrscr();/*清屏*/
printf("******************************************************************************** ");
printf(" Welcometo ");
printf(" Thestudentscoremanagesystem ");
printf("*************************************MENU*************************************** ");
printf(" 1.Entertherecord ");/*輸入學生成績記錄*/
printf(" 2.Printtherecord ");/*顯示*/
printf(" 3.Searchrecordonname ");/*尋找*/
printf(" 4.Deletearecord ");/*刪除*/
printf(" 5.Sorttomakenewafile ");/*排序*/
printf(" 6.Insertrecordtolist ");/*插入*/
printf(" 7.Savethefile ");/*保存*/
printf(" 8.Loadthefile ");/*讀取*/
printf(" 9.Quit ");/*退出*/
printf(" MadebyHuHaihong. ");
printf("******************************************************************************** ");
printf(" %d\%d\%d ",d.da_year,d.da_mon,d.da_day);/*顯示當前系統日期*/
do{
printf(" Enteryourchoice(1~9):");
scanf("%d",&n);
}while(n<1||n>9);/*如果選擇項不在1~9之間則重輸*/
return(n);/*返回選擇項,主函數根據該數調用相應的函數*/
}
/*輸入函數*/
STUDENT*create()
{
inti,s;
STUDENT*head=NULL,*p;/*定義函數.此函數帶回一個指向鏈表頭的指針*/
clrscr();
for(;;)
{p=(STUDENT*)malloc(LEN);/*開辟一個新的單元*/
if(!p)/*如果指針p為空*/
{printf(" Outofmemory.");/*輸出內存溢出*/
return(head);/*返回頭指針,下同*/
}
printf("Enterthenum(0:listend):");
scanf("%s",p->num);
if(p->num[0]=='0')break;/*如果學號首字元為0則結束輸入*/
printf("Enterthename:");
scanf("%s",p->name);
printf("Pleaseenterthe%dscores ",3);/*提示開始輸入成績*/
s=0;/*計算每個學生的總分,初值為0*/
for(i=0;i<3;i++)/*3門課程循環3次*/
{
do{
printf("score%d:",i+1);
scanf("%d",&p->score[i]);
if(p->score[i]<0||p->score[i]>100)/*確保成績在0~100之間*/
printf("Dataerror,pleaseenteragain. ");
}while(p->score[i]<0||p->score[i]>100);
s=s+p->score[i];/*累加各門成績*/
}
p->sum=s;/*將總分保存*/
p->average=(float)s/3;/*先用強制類型轉換將s轉換成float型,再求平均值*/
p->order=0;/*未排序前此值為0*/
p->next=head;/*將頭結點做為新輸入結點的後繼結點*/
head=p;/*新輸入結點為新的頭結點*/
}
return(head);
}
/*顯示全部記錄函數*/
voidprint(STUDENT*head)
{
inti=0;/*統計記錄條數*/
STUDENT*p;/*移動指針*/
clrscr();
p=head;/*初值為頭指針*/
printf(" ************************************STUDENT************************************ ");
printf("------------------------------------------------------------------------------- ");
printf("|Rec|Num|Name|Sc1|Sc2|Sc3|Sum|Ave|Order| ");
printf("------------------------------------------------------------------------------- ");
while(p!=NULL)
{
i++;
printf("|%3d|%4s|%-4s|%3d|%3d|%3d|%3d|%4.2f|%-5d| ",
i,p->num,p->name,p->score[0],p->score[1],p->score[2],p->sum,p->average,p->order);
p=p->next;
}
printf("------------------------------------------------------------------------------- ");
printf("**************************************END************************************** ");
}
/*查找記錄函數*/
voidsearch(STUDENT*head)
{
STUDENT*p;/*移動指針*/
chars[5];/*存放姓名用的字元數組*/
clrscr();
printf("Pleaseenternameforsearching. ");
scanf("%s",s);
p=head;/*將頭指針賦給p*/
while(strcmp(p->name,s)&&p!=NULL)/*當記錄的姓名不是要找的,或指針不為空時*/
p=p->next;/*移動指針,指向下一結點*/
if(p!=NULL)/*如果指針不為空*/
{printf(" *************************************FOUND************************************ ");
printf("------------------------------------------------------------------------------- ");
printf("|Num|Name|sc1|sc2|sc3|Sum|Ave|Order| ");
printf("------------------------------------------------------------------------------- ");
printf("|%4s|%4s|%3d|%3d|%3d|%3d|%4.2f|%-5d| ",
p->num,p->name,p->score[0],p->score[1],p->score[2],p->sum,p->average,p->order);
printf("------------------------------------------------------------------------------- ");
printf("***************************************END************************************** ");
}
else
printf(" Thereisnonum%sstudentonthelist. ",s);/*顯示沒有該學生*/
}
/*刪除記錄函數*/
STUDENT*delete(STUDENT*head)
{intn;
STUDENT*p1,*p2;/*p1為查找到要刪除的結點指針,p2為其前驅指針*/
charc,s[6];/*s[6]用來存放學號,c用來輸入字母*/
clrscr();
printf("Pleaseenterthedeletednum:");
scanf("%s",s);
p1=p2=head;/*給p1和p2賦初值頭指針*/
while(strcmp(p1->num,s)&&p1!=NULL)/*當記錄的學號不是要找的,或指針不為空時*/
{p2=p1;/*將p1指針值賦給p2作為p1的前驅指針*/
p1=p1->next;/*將p1指針指向下一條記錄*/
}
if(strcmp(p1->num,s)==0)/*學號找到了*/
{printf("**************************************FOUND************************************ ");
printf("------------------------------------------------------------------------------- ");
printf("|Num|Name|sc1|sc2|sc3|Sum|Ave|Order| ");
printf("------------------------------------------------------------------------------- ");
printf("|%4s|%4s|%3d|%3d|%3d|%3d|%4.2f|%-5d| ",
p1->num,p1->name,p1->score[0],p1->score[1],p1->score[2],p1->sum,p1->average,p1->order);
printf("------------------------------------------------------------------------------- ");
printf("***************************************END************************************** ");
printf("AreyousuretodeletethestudentY/N?");/*提示是否要刪除,輸入Y刪除,N則退出*/
for(;;)
{scanf("%c",&c);
if(c=='n'||c=='N')break;/*如果不刪除,則跳出本循環*/
if(c=='y'||c=='Y')
{
if(p1==head)/*若p1==head,說明被刪結點是首結點*/
head=p1->next;/*把第二個結點地址賦予head*/
else
p2->next=p1->next;/*否則將一下結點地址賦給前一結點地址*/
n=n-1;
printf(" Num%sstudenthavebeendeleted. ",s);
printf("Don'tforgettosave. ");break;/*刪除後就跳出循環*/
}
}
}
else
printf(" Thereisnonum%sstudentonthelist. ",s);/*找不到該結點*/
return(head);
}
/*排序函數*/
STUDENT*sort(STUDENT*head)
{inti=0;/*保存名次*/
STUDENT*p1,*p2,*t,*temp;/*定義臨時指針*/
temp=head->next;/*將原表的頭指針所指的下一個結點作頭指針*/
head->next=NULL;/*第一個結點為新表的頭結點*/
while(temp!=NULL)/*當原表不為空時,進行排序*/
{
t=temp;/*取原表的頭結點*/
temp=temp->next;/*原表頭結點指針後移*/
p1=head;/*設定移動指針p1,從頭指針開始*/
p2=head;/*設定移動指針p2做為p1的前驅,初值為頭指針*/
while(t->average<p1->average&&p1!=NULL)/*作成績平均分比較*/
{
p2=p1;/*待排序點值小,則新表指針後移*/
p1=p1->next;
}
if(p1==p2)/*p1==p2,說明待排序點值大,應排在首位*/
{
t->next=p1;/*待排序點的後繼為p*/
head=t;/*新頭結點為待排序點*/
}
else/*待排序點應插入在中間某個位置p2和p1之間,如p為空則是尾部*/
{
t->next=p1;/*t的後繼是p1*/
p2->next=t;/*p2的後繼是t*/
}
}
p1=head;/*已排好序的頭指針賦給p1,准備填寫名次*/
while(p1!=NULL)/*當p1不為空時,進行下列操作*/
{
i++;/*結點序號*/
p1->order=i;/*將結點序號賦值給名次*/
p1=p1->next;/*指針後移*/
}
printf("Sortingissucessful. ");/*排序成功*/
return(head);
}
/*插入記錄函數*/
STUDENT*insert(STUDENT*head,STUDENT*newnode)
{STUDENT*p0,*p1,*p2;
intn,sum1,i;
p1=head;/*使p1指向第一個結點*/
p0=newnode;/*p0指向要插入的結點*/
printf(" Pleaseenteranewnoderecord. ");/*提示輸入記錄信息*/
printf("Enterthenum:");
scanf("%s",newnode->num);
printf("Enterthename:");
scanf("%s",newnode->name);
printf("Pleaseenterthe%dscores. ",3);
sum1=0;/*保存新記錄的總分,初值為0*/
for(i=0;i<3;i++)
{
do{
printf("score%d:",i+1);
scanf("%d",&newnode->score[i]);
if(newnode->score[i]>100||newnode->score[i]<0)
printf("Dataerror,pleaseenteragain. ");
}while(newnode->score[i]>100||newnode->score[i]<0);
sum1=sum1+newnode->score[i];/*累加各門成績*/
}
newnode->sum=sum1;/*將總分存入新記錄中*/
newnode->average=(float)sum1/3;
newnode->order=0;
if(head==NULL)/*原來的鏈表是空表*/
{head=p0;p0->next=NULL;}/*使p0指向的結點作為頭結點*/
else
{while((p0->average<p1->average)&&(p1->next!=NULL))
{p2=p1;/*使p2指向剛才p1指向的結點*/
p1=p1->next;/*p1後移一個結點*/
}
if(p0->average>=p1->average)
{if(head==p1)head=p0;/*插到原來第一個結點之前*/
elsep2->next=p0;/*插到p2指向的結點之後*/
p0->next=p1;}
else
{p1->next=p0;p0->next=NULL;}/*插到最後的結點之後*/
}
n=n+1;/*結點數加1*/
head=sort(head);/*調用排序的函數,將學生成績重新排序*/
printf(" Student%shavebeeninserted. ",newnode->name);
printf("Don'tforgettosavethenewnodefile. ");
return(head);
}
/*保存數據到文件函數*/
voidsave(STUDENT*head)
{FILE*fp;/*定義指向文件的指針*/
STUDENT*p;/*定義移動指針*/
charoutfile[10];
printf("Enteroutfilename,forexamplec:\score ");
scanf("%s",outfile);
if((fp=fopen(outfile,"wb"))==NULL)/*為輸出打開一個二進制文件,為只寫方式*/
{
printf("Cannotopenthefile ");
return;/*若打不開則返回菜單*/
}
printf(" Savingthefile...... ");
p=head;/*移動指針從頭指針開始*/
while(p!=NULL)/*如p不為空*/
{
fwrite(p,LEN,1,fp);/*寫入一條記錄*/
p=p->next;/*指針後移*/
}
fclose(fp);/*關閉文件*/
printf("Savethefilesuccessfully! ");
}
/*從文件讀數據函數*/
STUDENT*load()
{STUDENT*p1,*p2,*head=NULL;/*定義記錄指針變數*/
FILE*fp;/*定義指向文件的指針*/
charinfile[10];
printf("Enterinfilename,forexamplec:\score ");
scanf("%s",infile);
if((fp=fopen(infile,"rb"))==NULL)/*打開一個二進制文件,為只讀方式*/
{
printf("Cannotopenthefile. ");
return(head);
}
printf(" Loadingthefile! ");
p1=(STUDENT*)malloc(LEN);/*開辟一個新單元*/
if(!p1)
{
printf("Outofmemory! ");
return(head);
}
head=p1;/*申請到空間,將其作為頭指針*/
while(!feof(fp))/*循環讀數據直到文件尾結束*/
{
if(fread(p1,LEN,1,fp)!=1)break;/*如果沒讀到數據,跳出循環*/
p1->next=(STUDENT*)malloc(LEN);/*為下一個結點開辟空間*/
if(!p1->next)
{
printf("Outofmemory! ");
return(head);
}
p2=p1;/*使p2指向剛才p1指向的結點*/
p1=p1->next;/*指針後移,新讀入數據鏈到當前表尾*/
}
p2->next=NULL;/*最後一個結點的後繼指針為空*/
fclose(fp);
printf("! ");
return(head);
}
⑵ C語言菜鳥求救:求代碼 100行左右
答案
void
main()
{
int
sele=1,t;
float
x;
system("cls");printf("歡迎使用簡易菜單!本菜單在vc++平台編譯通過\n");
printf("有何建議請聯系本人!\n");
printf("成績管理菜單\n");
printf("
\n");
printf(">>
1.輸入成績
2.計算總分
<<\n");
printf(">>
3.求平均值
4.輸出總分與平均
<<\n");
printf(">>
5.清理屏幕
6.高低排列
<<\n");
printf(">>
7.上平均分人數
0.退出
<<\n");
printf(">>
8.全部情況:總分
平均分
第一名
及格人數<<\n");
printf(">>
<<\n");
printf(">>
<<\n");
while
(sele!=0)
{
printf("輸入選擇序號:\n>");
scanf
("%d",&sele);
puts("
");
if
(sele>=0&&sele<9)
switch(sele)
{
case
1:input();break;
case
2:t=total(a);break;
case
3:x=average
(t,n);break;
case
4:print(t,x);break;
case
5:system("cls");
printf("歡迎使用簡易菜單!本菜單在vc++平台編譯通過\n");
printf("有何建議請聯系本人!\n");
printf("成績管理菜單\n");
printf("
\n");
printf(">>
1.輸入成績
2.計算總分
<<\n");
printf(">>
3.求平均值
4.輸出總分與平均
<<\n");
printf(">>
5.清理屏幕
6.高低排列
<<\n");
printf(">>
7.上平均分人數
0.退出
<<\n");
printf(">>
8.全部情況:總分
平均分
第一名
及格人數<<\n");
printf(">>
<<\n");
printf(">>
<<\n");break;
case
6:gaodi(a);break;
case
7:super(a);break;
case
8:full(t,x);break;
}
else
printf
("你的輸入有誤,請重新:");
}
⑶ C語言程序100行
//學生成績管理系統C代碼
/*頭文件*/
#include
#include
#include /*其它說明*/
#include /*字元串函數*/
#include /*內存操作函數*/
#include /*字元操作函數*/
#include /*動態地址分配函數*/
#define LEN sizeof(STUDENT)
typedef struct stu /*定義結構體數組用於緩存數據*/
{
char num[6];
char name[5];
int score[3];
int sum;
float average;
int order;
struct stu *next;
}STUDENT;
/*函數原型*/
STUDENT *init(); /*初始化函數*/
int menu_select(); /*菜單函數*/
STUDENT *create(); /*創建鏈表*/
void print(STUDENT *head); /* 顯示全部記錄*/
void search(STUDENT *head); /*查找記錄*/
STUDENT *delete(STUDENT *head); /*刪除記錄*/
STUDENT *sort(STUDENT *head); /*排序*/
STUDENT *insert(STUDENT *head,STUDENT *newnode); /*插入記錄*/
void save(STUDENT *head); /*保存文件*/
STUDENT *load(); /*讀文件*/
/*主函數界面*/
main()
{
STUDENT *head,newnode;
head=init(); /*鏈表初始化,使head的值為NULL*/
for(;;) /*循環無限次*/
{
switch(menu_select())
{
case 1:head=create();break;
case 2:print(head);break;
case 3:search(head);break;
case 4:head=delete(head);break;
case 5:head=sort(head);break;
case 6:head=insert(head,&newnode);break; /*&newnode表示返回地址*/
case 7:save(head);break;
case 8:head=load(); break;
case 9:exit(0); /*如菜單返回值為9則程序結束*/
}
}
}
/*初始化函數*/
STUDENT *init()
{
return NULL; /*返回空指針*/
}
/*菜單選擇函數*/
menu_select()
{
int n;
struct date d; /*定義時間結構體*/
getdate(&d); /*讀取系統日期並把它放到結構體d中*/
printf("press any key to enter the menu......"); /*按任一鍵進入主菜單*/
getch(); /*從鍵盤讀取一個字元,但不顯示於屏幕*/
clrscr(); /*清屏*/
printf("********************************************************************************\n");
printf("\t\t Welcome to\n");
printf("\n\t\t The student score manage system\n");
printf("*************************************MENU***************************************\n");
printf("\t\t\t1. Enter the record\n"); /*輸入學生成績記錄*/
printf("\t\t\t2. Print the record\n"); /*顯示*/
printf("\t\t\t3. Search record on name\n"); /*尋找*/
printf("\t\t\t4. Delete a record\n"); /*刪除*/
printf("\t\t\t5. Sort to make new a file\n"); /*排序*/
printf("\t\t\t6. Insert record to list\n"); /*插入*/
printf("\t\t\t7. Save the file\n"); /*保存*/
printf("\t\t\t8. Load the file\n"); /*讀取*/
printf("\t\t\t9. Quit\n"); /*退出*/
printf("\n\t\t Made by Hu Haihong.\n");
printf("********************************************************************************\n");
printf("\t\t\t\t%d\\%d\\%d\n",d.da_year,d.da_mon,d.da_day); /*顯示當前系統日期*/
do{
printf("\n\t\t\tEnter your choice(1~9):");
scanf("%d",&n);
}while(n9); /*如果選擇項不在1~9之間則重輸*/
return(n); /*返回選擇項,主函數根據該數調用相應的函數*/
}
/*輸入函數*/
STUDENT *create()
{
int i,s;
STUDENT *head=NULL,*p; /* 定義函數.此函數帶回一個指向鏈表頭的指針*/
clrscr();
for(;;)
{p=(STUDENT *)malloc(LEN); /*開辟一個新的單元*/
if(!p) /*如果指針p為空*/
{printf("\nOut of memory."); /*輸出內存溢出*/
return (head); /*返回頭指針,下同*/
}
printf("Enter the num(0:list end):");
scanf("%s",p->num);
if(p->num[0]=='0') break; /*如果學號首字元為0則結束輸入*/
printf("Enter the name:");
scanf("%s",p->name);
printf("Please enter the %d scores\n",3); /*提示開始輸入成績*/
s=0; /*計算每個學生的總分,初值為0*/
for(i=0;i<3;i++) /*3門課程循環3次*/
{
do{
printf("score%d:",i+1);
scanf("%d",&p->score[i]);
if(p->score[i]score[i]>100) /*確保成績在0~100之間*/
printf("Data error,please enter again.\n");
}while(p->score[i]score[i]>100);
s=s+p->score[i]; /*累加各門成績*/
}
p->sum=s; /*將總分保存*/
p->average=(float)s/3; /*先用強制類型轉換將s轉換成float型,再求平均值*/
p->order=0; /*未排序前此值為0*/
p->next=head; /*將頭結點做為新輸入結點的後繼結點*/
head=p; /*新輸入結點為新的頭結點*/
}
return(head);
}
/* 顯示全部記錄函數*/
void print(STUDENT *head)
{
int i=0; /* 統計記錄條數*/
STUDENT *p; /*移動指針*/
clrscr();
p=head; /*初值為頭指針*/
printf("\n************************************STUDENT************************************\n");
printf("-------------------------------------------------------------------------------\n");
printf("| Rec | Num | Name | Sc1 | Sc2 | Sc3 | Sum | Ave | Order |\n");
printf("-------------------------------------------------------------------------------\n");
while(p!=NULL)
{
i++;
printf("| %3d | %4s | %-4s | %3d | %3d | %3d | %3d | %4.2f | %-5d|\n",
i, p->num,p->name,p->score[0],p->score[1],p->score[2],p->sum,p->average,p->order);
p=p->next;
}
printf("-------------------------------------------------------------------------------\n");
printf("**************************************END**************************************\n");
}
/*查找記錄函數*/
void search(STUDENT *head)
{
STUDENT *p; /* 移動指針*/
char s[5]; /*存放姓名用的字元數組*/
clrscr();
printf("Please enter name for searching.\n");
scanf("%s",s);
p=head; /*將頭指針賦給p*/
while(strcmp(p->name,s) && p != NULL) /*當記錄的姓名不是要找的,或指針不為空時*/
p=p->next; /*移動指針,指向下一結點*/
if(p!=NULL) /*如果指針不為空*/
{printf("\n*************************************FOUND************************************\n");
printf("-------------------------------------------------------------------------------\n");
printf("| Num | Name | sc1 | sc2 | sc3 | Sum | Ave | Order |\n");
printf("-------------------------------------------------------------------------------\n");
printf("| %4s | %4s | %3d | %3d | %3d | %3d | %4.2f | %-5d|\n",
p->num,p->name,p->score[0],p->score[1],p->score[2],p->sum,p->average,p->order);
printf("-------------------------------------------------------------------------------\n");
printf("***************************************END**************************************\n");
}
else
printf("\nThere is no num %s student on the list.\n",s); /*顯示沒有該學生*/
}
/*刪除記錄函數*/
STUDENT *delete(STUDENT *head)
{int n;
STUDENT *p1,*p2; /*p1為查找到要刪除的結點指針,p2為其前驅指針*/
char c,s[6]; /*s[6]用來存放學號,c用來輸入字母*/
clrscr();
printf("Please enter the deleted num: ");
scanf("%s",s);
p1=p2=head; /*給p1和p2賦初值頭指針*/
while(strcmp(p1->num,s) && p1 != NULL) /*當記錄的學號不是要找的,或指針不為空時*/
{p2=p1; /*將p1指針值賦給p2作為p1的前驅指針*/
p1=p1->next; /*將p1指針指向下一條記錄*/
}
if(strcmp(p1->num,s)==0) /*學號找到了*/
{printf("**************************************FOUND************************************\n");
printf("-------------------------------------------------------------------------------\n");
printf("| Num | Name | sc1 | sc2 | sc3 | Sum | Ave | Order |\n");
printf("-------------------------------------------------------------------------------\n");
printf("| %4s | %4s | %3d | %3d | %3d | %3d | %4.2f | %-5d|\n",
p1->num,p1->name,p1->score[0],p1->score[1],p1->score[2],p1->sum,p1->average,p1->order);
printf("-------------------------------------------------------------------------------\n");
printf("***************************************END**************************************\n");
printf("Are you sure to delete the student Y/N ?"); /*提示是否要刪除,輸入Y刪除,N則退出*/
for(;;)
{scanf("%c",&c);
if(c=='n'||c=='N') break; /*如果不刪除,則跳出本循環*/
if(c=='y'||c=='Y')
{
if(p1==head) /*若p1==head,說明被刪結點是首結點*/
head=p1->next; /*把第二個結點地址賦予head*/
else
p2->next=p1->next; /*否則將一下結點地址賦給前一結點地址*/
n=n-1;
printf("\nNum %s student have been deleted.\n",s);
printf("Don't forget to save.\n");break; /*刪除後就跳出循環*/
}
}
}
else
printf("\nThere is no num %s student on the list.\n",s); /*找不到該結點*/
return(head);
}
/*排序函數*/
STUDENT *sort(STUDENT *head)
{int i=0; /*保存名次*/
STUDENT *p1,*p2,*t,*temp; /*定義臨時指針*/
temp=head->next; /*將原表的頭指針所指的下一個結點作頭指針*/
head->next=NULL; /*第一個結點為新表的頭結點*/
while(temp!=NULL) /*當原表不為空時,進行排序*/
{
t=temp; /*取原表的頭結點*/
temp=temp->next; /*原表頭結點指針後移*/
p1=head; /*設定移動指針p1,從頭指針開始*/
p2=head; /*設定移動指針p2做為p1的前驅,初值為頭指針*/
while(t->averageaverage&&p1!=NULL) /*作成績平均分比較*/
{
p2=p1; /*待排序點值小,則新表指針後移*/
p1=p1->next;
}
if(p1==p2) /*p1==p2,說明待排序點值大,應排在首位*/
{
t->next=p1; /*待排序點的後繼為p*/
head=t; /*新頭結點為待排序點*/
}
else /*待排序點應插入在中間某個位置p2和p1之間,如p為空則是尾部*/
{
t->next=p1; /*t的後繼是p1*/
p2->next=t; /*p2的後繼是t*/
}
}
p1=head; /*已排好序的頭指針賦給p1,准備填寫名次*/
while(p1!=NULL) /*當p1不為空時,進行下列操作*/
{
i++; /*結點序號*/
p1->order=i; /*將結點序號賦值給名次*/
p1=p1->next; /*指針後移*/
}
printf("Sorting is sucessful.\n"); /*排序成功*/
return (head);
}
/*插入記錄函數*/
STUDENT *insert(STUDENT *head,STUDENT *newnode)
{STUDENT *p0,*p1,*p2;
int n,sum1,i;
p1=head; /*使p1指向第一個結點*/
p0=newnode; /*p0指向要插入的結點*/
printf("\nPlease enter a newnode record.\n"); /*提示輸入記錄信息*/
printf("Enter the num:");
scanf("%s",newnode->num);
printf("Enter the name:");
scanf("%s",newnode->name);
printf("Please enter the %d scores.\n",3);
sum1=0; /*保存新記錄的總分,初值為0*/
for(i=0;i<3;i++)
{
do{
printf("score%d:",i+1);
scanf("%d",&newnode->score[i]);
if(newnode->score[i]>100||newnode->score[i]<0)
printf("Data error,please enter again.\n");
}while(newnode->score[i]>100||newnode->score[i]<0);
sum1=sum1+newnode->score[i]; /*累加各門成績*/
}
newnode->sum=sum1; /*將總分存入新記錄中*/
newnode->average=(float)sum1/3;
newnode->order=0;
if(head==NULL) /*原來的鏈表是空表*/
{head=p0;p0->next=NULL;} /*使p0指向的結點作為頭結點*/
else
{while((p0->averageaverage)&&(p1->next!=NULL))
{p2=p1; /*使p2指向剛才p1指向的結點*/
p1=p1->next; /*p1後移一個結點*/
}
if(p0->average>=p1->average)
{if(head==p1)head=p0; /*插到原來第一個結點之前*/
else p2->next=p0; /*插到p2指向的結點之後*/
p0->next=p1;}
else
{p1->next=p0;p0->next=NULL;} /*插到最後的結點之後*/
}
n=n+1; /*結點數加1*/
head=sort(head); /*調用排序的函數,將學生成績重新排序*/
printf("\nStudent %s have been inserted.\n",newnode->name);
printf("Don't forget to save the newnode file.\n");
return(head);
}
/*保存數據到文件函數*/
void save(STUDENT *head)
{FILE *fp; /*定義指向文件的指針*/
STUDENT *p; /* 定義移動指針*/
char outfile[10];
printf("Enter outfile name,for example c:\\score\n");
scanf("%s",outfile);
if((fp=fopen(outfile,"wb"))==NULL) /*為輸出打開一個二進制文件,為只寫方式*/
{
printf("Cannot open the file\n");
return; /*若打不開則返回菜單*/
}
printf("\nSaving the file......\n");
p=head; /*移動指針從頭指針開始*/
while(p!=NULL) /*如p不為空*/
{
fwrite(p,LEN,1,fp); /*寫入一條記錄*/
p=p->next; /*指針後移*/
}
fclose(fp); /*關閉文件*/
printf("Save the file successfully!\n");
}
/* 從文件讀數據函數*/
STUDENT *load()
{STUDENT *p1,*p2,*head=NULL; /*定義記錄指針變數*/
FILE *fp; /* 定義指向文件的指針*/
char infile[10];
printf("Enter infile name,for example c:\\score\n");
scanf("%s",infile);
if((fp=fopen(infile,"rb"))==NULL) /*打開一個二進制文件,為只讀方式*/
{
printf("Can not open the file.\n");
return(head);
}
printf("\nLoading the file!\n");
p1=(STUDENT *)malloc(LEN); /*開辟一個新單元*/
if(!p1)
{
printf("Out of memory!\n");
return(head);
}
head=p1; /*申請到空間,將其作為頭指針*/
while(!feof(fp)) /*循環讀數據直到文件尾結束*/
{
if(fread(p1,LEN,1,fp)!=1) break; /*如果沒讀到數據,跳出循環*/
p1->next=(STUDENT *)malloc(LEN); /*為下一個結點開辟空間*/
if(!p1->next)
{
printf("Out of memory!\n");
return (head);
}
p2=p1; /*使p2指向剛才p1指向的結點*/
p1=p1->next; /*指針後移,新讀入數據鏈到當前表尾*/
}
p2->next=NULL; /*最後一個結點的後繼指針為空*/
fclose(fp);
printf("You have success to read data from the file!\n");
return (head);
}
滿意請採納。
⑷ c語言100行簡單一點的代碼
登錄幼兒園200個小朋友的數據:姓名、性別、年齡、身高、體重、出生日期,分別按年齡排序後輸出。
#include<stdio.h>
#define N 200
struct child
{
char name[10];
char sex[3];
int age;
int height;
float weight;
struct {
int year;
int month;
int day;
}bdate;
}ch[N];
void input()
{
int i;
for(i=0;i<N;i++)
{
printf("\n請輸入第%d名小朋友信息:\n",i+1);
printf("姓名:");
scanf("%s",ch[i].name);
printf("性別:");
scanf("%s",ch[i].sex);
printf("年齡:");
scanf("%d",&ch[i].age);
printf("身高:");
scanf("%d",&ch[i].height);
printf("體重:");
scanf("%f",&ch[i].weight);
printf("出生日期[YYYY-MM-DD]:");
scanf("%d-%d-%d",&ch[i].bdate.year,&ch[i].bdate.month,&ch[i].bdate.day);
}
}
void sort()
{
struct child ct;
int i,j;
for(i=0;i<N-1;i++)
for(j=0;j<N-i-1;j++)
if(ch[j].height<ch[j+1].height)
{
ct=ch[j];
ch[j]=ch[j+1];
ch[j+1]=ct;
}
}
void output()
{
int i;
printf("\n\t幼兒園小朋友一覽(依身高排序)\n");
printf("===================================================\n");
printf(" 姓名 性別 年齡 身高 體重 出生日期 \n");
printf("===================================================\n");
for(i=0;i<N;i++)
printf(" %-8s %-2s %2d %d %3.1f %d.%d.%d\n",ch[i].name,ch[i].sex,ch[i].age,ch[i].height,ch[i].weight,ch[i].bdate.year,ch[i].bdate.month,ch[i].bdate.day);
}
void main()
{
input();
sort();
output();
}
⑸ 求100行左右的代碼(C語言,c++,數據結構編寫的均可)
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define N 10
struct library {
int num;
char book_name[30];
char writer[30];
char sort_num[3];
char pub_company[30];
char pub_time[30];
char prise[30];
};
typedef struct library LIB; /*結構體的定義用於存放書籍及借書的信息*/
LIB lib[N];
FILE *fp; int all=0;
int menu(void);
void input(void);
void output(void);
void save(void);
void del(void);
void search(void);
void xiugai(void);
main()
{
for(;;)
{
switch(menu()) {
case 1:input();break;
case 2:output();break;
case 3:save();break;
case 4:search();break;
case 5:xiugai();break;
case 6:del();break;
case 7:sort();break;
case 0:exit(1);break;
} /*SWITCH定義函數輸出*/
}
}
int menu(void)
{
char m[3];
int n; printf(" *********************WELCOME**********************\n\n\n\n\n");
printf("\t\t\t-----圖書信息管理系統----\n");
printf("\t\t1:輸入\n");
printf("\t\t2:輸出\n");
printf("\t\t3:保存\n");
printf("\t\t4:查找\n");
printf("\t\t5:修改\n");
printf("\t\t6:刪除\n");
printf("\t\t7:統計\n");
printf("\t\t0:退出\n");
printf("\t\tplease choose a operation(0-6):\n");
scanf("%s",m);
n=atoi(m);
return(n);
} /*主要界面*/
void input(void)
{
int i;
char m[3];
for(i=all;i<N;i++)
{
all++;
printf("請輸入信息:\n");
printf("\t\t號碼:\n");
scanf("%d",&lib[i].num);
printf("\t\t書名:\n");
scanf("%s",lib[i].book_name);
printf("\t\t作者:\n");
scanf("%s",lib[i].writer);
printf("\t\tsort_num:\n");
scanf("%s",lib[i].sort_num);
printf("\t\t出版商:\n");
scanf("%s",lib[i].pub_company);
printf("\t\t出版時間:\n");
scanf("%s",lib[i].pub_time);
printf("\t\t價格:\n");
scanf("%s",lib[i].prise);
a: printf("\t\tyes/哦了?\n");
printf("\t\t1:yes\n");
printf("\t\t2:no\n");
scanf("%s",m);
if(atoi(m)==1)
continue;
else if(atoi(m)==2)
return;
else
{
printf("\t\t錯誤!\n");
goto a;
} /* 輸入條件查找*/
}
}
void output(void)
{
int i;
for(i=0;i<all;i++)
{
printf("\t\t%d\n",lib[i].num);
printf("%s\t\t%s\t\t%s\n",lib[i].book_name,lib[i].writer,lib[i].sort_num);
printf("%s\t\t%s\t\t%s\n",lib[i].pub_company,lib[i].pub_time,lib[i].prise);
}
} /*輸出書名作者出版時間價格等*/
void save(void)
{
int i;
if((fp=fopen("file.c","wb"))==NULL)
{
printf("can not open the file");
exit(1);
}
for(i=0;i<all;i++)
{
if(fwrite(&lib[i],sizeof(LIB),1,fp)!=1)
{
printf("can not write!");
exit(1);
}
} /*條件不符合時拒絕存儲*/
fclose(fp);
}
void search(void)
{
int i,flag;
char m[3];
char name[30];
printf("\t\t請選擇您的存儲方式:\n");
printf("\t\t1:按書名!\n");
printf("\t\t2:按作者!\n");
scanf("%s",m);
i=atoi(m);
switch(i)
{
case 1:{
printf("\t\t請輸入書名:\n");
scanf("%s",name);
flag=0;
for(i=0;i<N;i++)
{
if(strcmp(name,lib[i].book_name)==0)
{
printf("\t\t%d\n",lib[i].num);
printf("%s\t\t%s\t\t%s\n",lib[i].book_name,lib[i].writer,lib[i].sort_num);
printf("%s\t\t%s\t\t%s\n",lib[i].pub_company,lib[i].pub_time,lib[i].prise);
flag=1;break;
}
}
if(flag==0)
printf("\t\t沒有這本書!\n");
}
case 2:{
printf("\t\t請輸入作者:\n");
scanf("%s",name);
flag=0;
for(i=0;i<N;i++)
{
if(strcmp(name,lib[i].writer)==0)
{
printf("\t\t%d\n",lib[i].num);
printf("%s\t\t%s\t\t%s\n",lib[i].book_name,lib[i].writer,lib[i].sort_num);
printf("%s\t\t%s\t\t%s\n",lib[i].pub_company,lib[i].pub_time,lib[i].prise);
flag=1;break;
}
}
if(flag==0)
printf("\t\t沒有這個作者!\n");
}
} /*查找圖書按書名或作者並輸出*/
}
void xiugai(void)
{
int i,flag;
char name[30],n[3];
printf("\t\t請輸入要修改的書名 :\n");
scanf("%s",name); /*修改書名*/
flag=0;
for(i=0;i<N;i++)
{
if(strcmp(name,lib[i].book_name)==0)
{
printf("\t\t%d\n",lib[i].num);
printf("%s\t\t%s\t\t%s\n",lib[i].book_name,lib[i].writer,lib[i].sort_num);
printf("%s\t\t%s\t\t%s\n",lib[i].pub_company,lib[i].pub_time,lib[i].prise);
printf("\t\tplease input xiugai's the informations:\n");
printf("\t\tnum:\n");
scanf("%d",&lib[i].num);
printf("\t\tbook_name:\n");
scanf("%s",lib[i].book_name);
printf("\t\twriter:\n");
scanf("%s",lib[i].writer);
printf("\t\tsort_num:\n");
scanf("%s",lib[i].sort_num);
printf("\t\tpub_company:\n");
scanf("%s",lib[i].pub_company);
printf("\t\tpub_time:\n");
scanf("%s",lib[i].pub_time);
printf("\t\tprise:\n");
scanf("%s",lib[i].prise);
flag=1;break;
}
} /*增加圖書*/
if(flag==0)
printf("\t\t沒有找到啊!\n");
}
void del(void)
{
int i,j,flag;
char name[30];
printf("\t\t請輸入要刪除的書名:\n");
scanf("%s",name);
flag=0;
for(i=0;i<N;i++)
{
if(strcmp(name,lib[i].book_name)==0)
{
printf("\t\t%d\n",lib[i].num);
printf("%s\t\t%s\t\t%s\n",lib[i].book_name,lib[i].writer,lib[i].sort_num);
printf("%s\t\t%s\t\t%s\n",lib[i].pub_company,lib[i].pub_time,lib[i].prise);
for(j=N;j>i;j--)
{
lib[j-1].num=lib[j].num;
strcpy(lib[j-1].book_name,lib[j].book_name);
strcpy(lib[j-1].writer,lib[j].writer);
strcpy(lib[j-1].sort_num,lib[j].sort_num);
strcpy(lib[j-1].pub_company,lib[j].pub_company);
strcpy(lib[j-1].pub_time,lib[j].pub_time);
strcpy(lib[j-1].prise,lib[j].prise);
flag=1;
printf("\t\t已經刪除!\n");
break;
}
}
}
if(flag==0)
printf("\t\t沒有這本書!\n");
} /*刪除圖書*/
⑹ 求一個簡單100行c語言程序,一定要原創
答案voidmain(){intsele=1,t;floatx;system("cls");printf("歡迎使用簡易菜單!本菜單在VC++平台編譯通過\n");printf("有何建議請聯系本人!\n");printf("成績管理菜單\n");printf("\n");printf(">>1.輸入成績2.計算總分>3.求平均值4.輸出總分與平均>5.清理屏幕6.高低排列>7.上平均分人數0.退出>8.全部情況:總分平均分第一名及格人數>>");scanf("%d",&sele);puts("");if(sele>=0&&sele>1.輸入成績2.計算總分>3.求平均值4.輸出總分與平均>5.清理屏幕6.高低排列>7.上平均分人數0.退出>8.全部情況:總分平均分第一名及格人數>><<\n");break;case6:gaodi(a);break;case7:super(a);break;case8:full(t,x);break;}elseprintf("你的輸入有誤,請重新:");}
⑺ c語言必背100代碼有哪些
/*輸出9*9口訣。共9行9列,i控制行,j控制列。*/
#include "stdio.h"
main()
{int i,j,result;
for (i=1;i<10;i++)
{ for(j=1;j<10;j++)
{
result=i*j;
printf("%d*%d=%-3d",i,j,result);/*-3d表示左對齊,佔3位*/
}
printf("
");/*每一行後換行*/
}
}
(7)c語言100行代碼擴展閱讀:
C語言的字元串其實就是以'