编程里乘法是
九九乘法表c语言编程内容如下：
//九九乘法表，左下三角
#include<stdio.h>
int main()
｛
int i=0,j=0;
for(i=1;i<10;i++)
{
for(j=1;j<=i;j++)
{
printf("%d*%d=%d ",j,i,i*j);
}
printf(" ");
}
printf(" ");
return 0;
}
语言简介
C语言是一种应用广泛，并且实现灵活的一种计算机编程语言，用C语言编出来的程序，可以在很多平台上运行，可移植性强。
不仅如此，我们用的众多聊天工具也可以用C语言来实现。具体的C语言编程内容请参加C或者C++等。C语言有一个突出的优点就是适合于多种操作系统，如DOS、UNIX，也适用于多种机型。
B. C语言2个数相乘
两数相乘的C语言编程：
(2)编程里乘法是扩展阅读:
C语言是一门通用计算机编程语言，应用广泛。C语言的设计目标是提供一种能以简易的方式编译、处理低级存储器、产生少量的机器码以及不需要任何运行环境支持便能运行的编程语言。
C 语言是以函数形式提供给用户的，这些函数可方便的调用，并具有多种循环、条件语句控制程序流向，从而使程序完全结构化。
C. C语言：乘号怎样表示
* 表示乘号，且不可省略，数学上有的时候乘号可以省略，但是C程序中不能省略，如数学上表示a和b相乘，可以写成ab，但是在C程序中必须写成a*b，*必须要有。
另外语句后有分号；所有符号都是英文半角符号。
比如：
使用公式c=2πr计算圆的周长。该语句应写为：
c=2*3.14*r;
(3)编程里乘法是扩展阅读
源代码如下：
#include <stdio.h>
#include <stdlib.h>
int main()
{
int a=12;
int b=10;
printf("a=%d
", a);
a=a+8;
printf("a=%d ", a);
a=a*b;
printf("a=%d ", a);
system("pause");
return 0;
}
D. 加减乘除的c语言编程怎么写
c语言的加减乘除可以这样写，假设有int变量a,b，c
加法:c=a+b
减法：c=a-b
乘法：c=a*b
除法：c=a/b
E. C语言乘号用法
C语言中*是二元运算符：乘号，用于将两个表达式的值相乘；
也是一元运算符：取值，用在指针表达式的左边，取指针指向的存储位置的值。
使用示例：
#include <stdio.h>
int main()
{
int a = 12;
int b = 100;
float c = 8.5;
int m = a + b;
float n = b * c;
double p = a / c;
int q = b % a;
printf("m=%d, n=%f, p=%lf, q=%d ", m, n, p, q);
return 0;
}
(5)编程里乘法是扩展阅读
C语言后缀表达式2级
postfix-expression [ expression ]，数组下标运算。
postfix-expression ( argument-expression-list)，函数调用，括号内的参数可选。
postfix-expression . identifier，成员访问，
postfix-expression -> identifier，成员访问，->号之前应为指针。
postfix-expression ++，后缀自增
postfix-expression --，后缀自减
( type-name ) { initializer-list }
( type-name ) { initializer-list , } 复合初始化，C99后新增。
F. c++编程 多项式的乘法
#include <iostream>
#include<algorithm>
using namespace std;
class Polynomial;
class Term{//多项式的每一项
friend Polynomial;
public:
float coef;//系数
int exp;//指数
};
class Polynomial{//多项式类
friend ostream & operator<<(ostream &o,const Polynomial & poly);
public:
Polynomial();
Polynomial(const Polynomial & poly);
~Polynomial();
Polynomial operator+(const Polynomial & poly);//多项式加法
Polynomial operator*(const Polynomial & poly);//多项式乘法
float Eval(float x);//数x代入多项式求值
void NewTerm(float coef,int exp);//添加一项,若有相同的指数项，则合并
private:
void insertTerm(const Term & term);//项的有序插入
private:
Term *termArray;//非零系数项数组
int capacity;//数组大小
int terms;//非零系数的项数
};
Polynomial::Polynomial()
{
this->terms=0;
this->capacity=10;
termArray=new Term[this->capacity];
}
Polynomial::Polynomial(const Polynomial & b)
{
this->terms=0;
this->capacity=b.capacity;
termArray = new Term[this->capacity];
for(int i=0;i<b.terms;i++){
NewTerm(b.termArray[i].coef,b.termArray[i].exp);
}
}
Polynomial::~Polynomial()
{
delete [] termArray;
}
Polynomial Polynomial::operator+(const Polynomial & b)
{
Polynomial c;
int aPos=0;
int bPos=0;
while(aPos<terms && bPos<b.terms){
if(termArray[aPos].exp == b.termArray[bPos].exp){
float coef=termArray[aPos].coef+b.termArray[bPos].coef;
if(coef)c.NewTerm(coef,termArray[aPos].exp);
aPos++;bPos++;
}else if(termArray[bPos].exp < b.termArray[bPos].exp){
c.NewTerm(b.termArray[bPos].coef,b.termArray[bPos].exp);
bPos++;
}else{
c.NewTerm(termArray[aPos].coef,termArray[aPos].exp);
aPos++;
}
}
while (aPos < terms){
c.NewTerm(termArray[aPos].coef,termArray[aPos].exp);
aPos++;
}
while (bPos < b.terms){
c.NewTerm(b.termArray[bPos].coef,b.termArray[bPos].exp);
bPos++;
}
return c;
}
Polynomial Polynomial::operator*(const Polynomial & b)
{
Polynomial c;
for(int i=0; i<terms; i++){
for(int j=0; j<b.terms; j++){
float coef = termArray[i].coef*b.termArray[j].coef;
int exp = termArray[i].exp + b.termArray[j].exp;
c.NewTerm(coef,exp);
}
}
return c;
}
void Polynomial::NewTerm(float coef, int exp)
{
if(terms == capacity){
capacity *= 2;
Term *tmp = new Term[capacity];
(termArray,termArray+terms,tmp);
delete [] termArray;
termArray = tmp;
}
Term ATerm;
ATerm.coef=coef;ATerm.exp=exp;
insertTerm(ATerm);
}
void Polynomial::insertTerm(const Term & term)
{
int i;
for(i=0; i<terms && term.exp<termArray[i].exp; i++){
}
if(term.exp == termArray[i].exp){
termArray[i].coef += term.coef;
if(!termArray[i].coef){
for(int j=i; j<terms-1; j++)
termArray[j]= termArray[j+1];
terms--;
}
}else{
for(int j=terms-1; j>=i;j--)
termArray[j+1]=termArray[j];
termArray[i] = term;
terms++;
}
}
float Polynomial::Eval(float x)
{
float res=0.0;
for(int i=0;i<terms; i++){
res += termArray[i].coef * pow(x,termArray[i].exp);
}
return res;
}
ostream & operator<<(ostream & o,const Polynomial & poly)
{
for(int i=0;i<poly.terms-1;i++){
o<<poly.termArray[i].coef<<"x^"<<poly.termArray[i].exp<<" + ";
}
o<<poly.termArray[poly.terms-1].coef<<"x^"<<poly.termArray[poly.terms-1].exp;
return o;
}
void test()
{
Polynomial p1;
p1.NewTerm(3,2);
p1.NewTerm(2.1,3);
Polynomial p2;
p2.NewTerm(1,2);
p2.NewTerm(1,3);
p2.NewTerm(5,1);
cout<<"("<<p1<<") + ("<<p2<<") = "<<p1+p2<<endl;
cout<<"F(x=2) = "<<(p1+p2).Eval(2)<<endl;
cout<<"("<<p1<<") * ("<<p2<<") = "<<p1 * p2<<endl;
}
int main()
{
test();
system("Pause");
return 0;
}
#include <iostream>
#include<algorithm>
using namespace std;
class Polynomial;
class Term{//多项式的每一项
friend Polynomial;
public:
float coef;//系数
int exp;//指数
};
class Polynomial{//多项式类
friend ostream & operator<<(ostream &o,const Polynomial & poly);
public:
Polynomial();
Polynomial(const Polynomial & poly);
~Polynomial();
Polynomial operator+(const Polynomial & poly);//多项式加法
Polynomial operator*(const Polynomial & poly);//多项式乘法
float Eval(float x);//数x代入多项式求值
void NewTerm(float coef,int exp);//添加一项,若有相同的指数项，则合并
private:
void insertTerm(const Term & term);//项的有序插入
private:
Term *termArray;//非零系数项数组
int capacity;//数组大小
int terms;//非零系数的项数
};
Polynomial::Polynomial()
{
this->terms=0;
this->capacity=10;
termArray=new Term[this->capacity];
}
Polynomial::Polynomial(const Polynomial & b)
{
this->terms=0;
this->capacity=b.capacity;
termArray = new Term[this->capacity];
for(int i=0;i<b.terms;i++){
NewTerm(b.termArray[i].coef,b.termArray[i].exp);
}
}
Polynomial::
~Polynomial()
{
delete [] termArray;
}
Polynomial Polynomial::operator+(const Polynomial & b)
{
Polynomial c;
int aPos=0;
int bPos=0;
while(aPos<terms && bPos<b.terms){
if(termArray[aPos].exp == b.termArray[bPos].exp){
float coef=termArray[aPos].coef+b.termArray[bPos].coef;
if(coef)c.NewTerm(coef,termArray[aPos].exp);
aPos++;bPos++;
}else if(termArray[bPos].exp < b.termArray[bPos].exp){
c.NewTerm(b.termArray[bPos].coef,b.termArray[bPos].exp);
bPos++;
}else{
c.NewTerm(termArray[aPos].coef,termArray[aPos].exp);
aPos++;
}
}
while (aPos < terms){
c.NewTerm(termArray[aPos].coef,termArray[aPos].exp);
aPos++;
}
while (bPos < b.terms){
c.NewTerm(b.termArray[bPos].coef,b.termArray[bPos].exp);
bPos++;
}
return c;
}
Polynomial Polynomial::operator*(const Polynomial & b)
{
Polynomial c;
for(int i=0; i<terms; i++){
for(int j=0; j<b.terms; j++){
float coef = termArray[i].coef*b.termArray[j].coef;
int exp = termArray[i].exp + b.termArray[j].exp;
c.NewTerm(coef,exp);
}
}
return c;
}
void Polynomial::NewTerm(float coef, int exp)
{
if(terms == capacity){
capacity *= 2;
Term *tmp = new Term[capacity];
(termArray,termArray+terms,tmp);
delete [] termArray;
termArray = tmp;
}
Term ATerm;
ATerm.coef=coef;ATerm.exp=exp;
insertTerm(ATerm);
}
void Polynomial::insertTerm(const Term & term)
{
int i;
for(i=0; i<terms && term.exp<termArray[i].exp; i++){
}
if(term.exp == termArray[i].exp){
termArray[i].coef += term.coef;
if(!termArray[i].coef){
for(int j=i; j<terms-1; j++)
termArray[j]= termArray[j+1];
terms--;
}
}else{
for(int j=terms-1; j>=i;j--)
termArray[j+1]=termArray[j];
termArray[i] = term;
terms++;
}
}
float Polynomial::Eval(float x)
{
float res=0.0;
for(int i=0;i<terms; i++){
res += termArray[i].coef * pow(x,termArray[i].exp);
}
return res;
}
ostream & operator<<(ostream & o,const Polynomial & poly)
{
for(int i=0;i<poly.terms-1;i++){
o<<poly.termArray[i].coef<<"x^"<<poly.termArray[i].exp<<" + ";
}
o<<poly.termArray[poly.terms-1].coef<<"x^"<<poly.termArray[poly.terms-1].exp;
return o;
}
void test()
{
Polynomial p1;
p1.NewTerm(3,2);
p1.NewTerm(2.1,3);
Polynomial p2;
p2.NewTerm(1,2);
p2.NewTerm(1,3);
p2.NewTerm(5,1);
cout<<"("<<p1<<") + ("<<p2<<") = "<<p1+p2<<endl;
cout<<"F(x=2) = "<<(p1+p2).Eval(2)<<endl;
cout<<"("<<p1<<") * ("<<p2<<") = "<<p1 * p2<<endl;
}
int main()
{
test();
system("Pause");
return 0;
}
测试结果：
Cpp代码
(2.1x^3 + 3x^2) + (1x^3 + 1x^2 + 5x^1) = 3.1x^3 + 4x^2 + 5x^1
F(x=2) = 50.8
(2.1x^3 + 3x^2) * (1x^3 + 1x^2 + 5x^1) = 2.1x^6 + 5.1x^5 + 13.5x^4 + 15x^3
请按任意键继续. . .
(2.1x^3 + 3x^2) + (1x^3 + 1x^2 + 5x^1) = 3.1x^3 + 4x^2 + 5x^1
F(x=2) = 50.8
(2.1x^3 + 3x^2) * (1x^3 + 1x^2 + 5x^1) = 2.1x^6 + 5.1x^5 + 13.5x^4 + 15x^3
请按任意键继续. . .