编译器课程设计

Ⅰ c++课程设计一般都会出现哪些错误，错误提示都是什么

编译器的部分工作是寻找程序代码中的错误。编译器不能查出程序的意义是否正确, 但它可以查出程序形式上的错误。下面是编译器能查出的最普遍的一些错误。语法错误。程序员犯了 C++ 语言中的语法错误。下面代码段说明常见的语法错误；每个注释描述下一行的错误。// error: missing ')' in parameter list for main int main ( { // error: used colon, not a semicolon after endl std::cout << "Read each file." << std::endl: // error: missing quotes around string literal std::cout << Update master. << std::endl; // ok: no errors on this line std::cout << "Write new master." <<std::endl; // error: missing ';' on return statement return 0 }
类型错误。C++ 中每个数据项都有其相关联的类型。例如，值 10 是一个整数。用双引号标注起来的单词“hello”是字符串字面值。类型错误的一个实例是传递了字符串字面值给应该得到整型参数的函数。声明错误。C++ 程序中使用的每个名字必须在使用之前声明。没有声明名字通常会导致错误信息。最常见的两种声明错误，是从标准库中访问名字时忘记使用“std::”，以及由于疏忽而拼错标识符名:#include <iostream> int main() { int v1, v2; std::cin >> v >> v2; // error: uses " v "not" v1" // cout not defined, should be std::cout cout << v1 + v2 << std::endl; return 0; } 错误信息包含行号和编译器对我们所犯错误的简要描述。按错误报告的顺序改正错误是个好习惯，通常一个错误可能会产生一连串的影响，并导致编译器报告比实际多得多的错误。最好在每次修改后或最多改正了一些显而易见的错误后，就重新编译代码。这个循环就是众所周知的编辑—编译—调试。

Ⅱ c++课程设计源代码

c++课程设计 学生管理系统源代码
#include<iostream>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
using namespace std;
typedef struct stu
{
char name[20];
long int number;
int snum;
char sex[20];
char add[30] ;
char time[20];
char tel[20];
struct stu *next;
}stu,*student;
int init(student &s);
void insert(student &s);
void print(student &s);
int delete(student &s);
void find (student &s);
void findname(student &s);
void findnum(student &s);
void modifay(student &s);
void putfile(student &s);
void getfile(student &s);

void main()
{
student s;
init(s);
cout<<"欢迎使用学生管理系统."<<endl;
cout<<" "<<endl;
cout<<endl;
while(1)
{
int i;
mainint:
cout<<"请选择相关操作:"<<endl<<"1.建立学生资料文件."<<endl<<"2.浏览."<<endl<<"3.删除."<<endl;
cout<<"4.查询."<<endl<<"5.修改."<<endl<<"6.打开学生文件."<<endl<<"7.退出管理系统." <<endl<<"请选择:";
cin>>i;
if(i<0||i>7)
{
cout<<"输入了错误的数字,Again!"<<endl<<endl;
goto mainint;
}
switch(i)
{
case 1: insert(s);break;
case 2: print(s);
putfile(s);
break;
case 3: ldelete(s);break;
case 4: find(s);break;
case 5: modifay(s);
break;
case 6: getfile(s);break;
case 7: exit(0);
}
}

}
int init(student &s)
{
s=(student)malloc(sizeof(stu));
if (s)
{
s->next=NULL;
return 0;
}
else return -1;
}
void insert(student &s) //insert
{
cout<<endl;
student p,q;
p=(student)malloc(sizeof(stu));
cout<<"请输入学生信息："<<endl;
cout<<"姓名:";
cin>>p->name;
cout<<endl;
cout<<"学号:";
cin>>p->number;
cout<<endl;
cout<<"性别:";
cin>>p->sex;
cout<<endl;
cout<<"家庭住址:" ;
cin>>p->add;
cout<<endl;
cout<<"出生年月:" ;
cin>>p->time;
cout<<endl;
cout<<"宿舍号:";
cin>>p->snum;
cout<<endl;
cout<<"宿舍号码:";
cin>>p->tel;
q=s;
while(!(q->next==NULL)&&(q->next->number<p->number))
q=q->next;
p->next=q->next;
q->next=p;
//if()p->next=NULL;
//free(p);

}
int ldelete(student &s) //delete
{
cout<<endl;
student p,a;
p=s ;
cout<<"请输入删除的学号:";
long int number;
cin>>number;
while(p)
{ if (p->number==number)
{
a->next=p->next;
free(p); return(0);}
else
{ a=p;
p=p->next;} }
cout<<"没有找到你要删除的选项!"<<endl<<endl;return(-1);
}
void print(student &s)
{
int a;
a=0;
student p;
p=s->next;
cout<<"姓名 "<<"学号 " <<"性别 "<<"家庭住址 "<<"出生年月 "<<"宿舍号"<<"宿舍号码"<<endl;
while(p)
{
a++;
cout<<p->name<<" "<<p->number<<" "<<p->sex<<" "<<p->add<<" "<<p->time<<" "<<p->snum<<" "<<p->tel<<" "<<endl;
p=p->next;
}
cout<<endl;
if (a==0)
cout<<"还没有学生信息!"<<endl<<endl ;
}
void find (student &s) //find
{
findl:
cout<<"请选择查找方法:"<<endl<<"1.按姓名查找."<<endl<<"2.按学号查找."<<endl;
cout<<"请选择:";
int k;
cin>>k;
if(k<0||k>3)
{
cout<<"输了入错误数字,Again!"<<endl<<endl;
goto findl;
}

switch(k)
{
case 1: findname(s);break;
case 2: findnum(s);break;
}
}

void findname(student &s) //find by name
{
student p;
p=s->next;
cout<<"请输入姓名：";
char name[20];
int j;
j=0;
cin>>name;
cout<<"你要查找的资料是:"<<endl;
cout<<"姓名 "<<"学号 " <<"性别 "<<"家庭住址 "<<"出生日期 "<<"宿舍号 "<<"宿舍号码"<<endl;
while(p)
{
if (strcmp(p->name,name)==0)
{
cout<<p->name<<" "<<p->number<<" "<<p->sex<<" "<<p->add<<" "<<p->time<<" "<<p->snum<<" "<<p->tel<<" "<<endl;
j++;
}
p=p->next;
}
cout<<endl;
if(j==0)
cout<<"对不起,没找到你要的信息!"<<endl<<endl ;
}
void findnum(student &s) //find by number
{
student p;
p=s->next;
cout<<"请输入学号：";
long int number;
int j;
j=0;
cin>>number;
cout<<"你要查找的资料是:"<<endl;
cout<<"姓名 "<<"学号 "<<"性别 "<<"家庭住址 "<<"出生日期 "<<"宿舍号 "<<"宿舍电话"<<endl;
while(p)
{
if (p->number==number)
{
cout<<p->name<<" "<<p->number<<" "<<p->sex<<" "<<p->add<<" "<<p->time<<" "<<p->snum<<" "<<p->tel<<" "<<endl;
j++;
}
p=p->next;
}
cout<<endl;
if(j==0)
cout<<"对不起,没找到你要的信息"<<endl<<endl ;
}
void modifay(student &s) //modifay
{
student q,p,l,m;
int j;
j=0;
q=s->next;
l=s;
m=s;
cout<<"请输入要修改的学号:" ;
long int num;
cin>>num;
cout<<"姓名 "<<"学号 "<<"性别 "<<"家庭住址 "<<"入学时间 "<<"宿舍号 "<<"电话号码"<<endl;
while(q)
{
if (q->number==num)
{
cout<<"你要修改的信息是:"<<endl;
cout<<q->name<<" "<<q->number<<" "<<q->sex<<" "<<q->add<<" "<<q->time<<" "<<q->snum<<" "<<q->tel<<" "<<endl;
j++;
p=(student)malloc(sizeof(stu));
cout<<"请输入新的学生信息:"<<endl;
cout<<"姓名:";
cin>>p->name;
cout<<endl;
cout<<"学号:";
cin>>p->number;
cout<<endl;
cout<<"年龄:";
cin>>p->age;
cout<<endl;
cout<<"性别:";
cin>>p->sex;
cout<<endl;
cout<<"家庭住址:" ;
cin>>p->add;
cout<<endl;
cout<<"入学时间:" ;
cin>>p->time;
cout<<endl;
cout<<"电话号码:";
cin>>p->tel;
l->next=q->next;
free(q);
goto tt;
}
else
{
l=q;
q=q->next;
}
}
cout<<endl;
if (j==0) cout<<"没找到你要的数据!"<<endl<<endl ;
tt:
while(!(m->next==NULL)&&(m->next->number<p->number))
m=m->next;
p->next=m->next;
m->next=p;
}
void putfile(student &s)
{
student p;
p=s->next;
FILE *fp;
if((fp=fopen("information.txt","w"))==NULL)
{
cout<<"打不开文件"<<endl<<endl;
exit(0);
}
while(p)
{
if(fwrite(p,sizeof(struct stu),1,fp)!=1 )
{
cout<<"文件写入错误"<<endl<<endl;
return;
}
p=p->next;
}
fclose(fp) ;
}
void getfile(student &s)
{
student p,q;
q=s;
FILE *fp1 ;
if((fp1=fopen("information.txt","r"))==NULL)
{
cout<<"打不开文件"<<endl;
exit(0);
}
cout<<"姓名 "<<"学号 "<<"性别 "<<"家庭住址 "<<"入学时间 "<<"宿舍号 "<<"电话号码"<<endl;
p=(student)malloc(sizeof(stu));
while(fread(p,sizeof(struct stu),1,fp1)!=0)
{
cout<<p->name<<" "<<p->number<<" "<<p->sex<<" "<<p->add<<" "<<p->time<<" "<<p->age<<" "<<p->tel<<endl;
while(!(q->next==NULL)&&(q->next->number<p->number))
q=q->next;
p->next=q->next;
q->next=p;
p=(student)malloc(sizeof(stu));
}
fclose(fp1);
cout<<endl;
}