UC知道c++新手问题（.cpp）
来源：百度知道 编辑：UC知道 时间：2024/05/29 09:52:41
我要编一个加法程序，但总是出错，帮我改代码。
#include<iostream>
#include<iomanip>
using namespace std;
void main()
{
static int a,b,c;
static char *jjcc;
cout<<"Enter two numbers: ";
cin>>a>>b;
cout<<"Enter +-*/: ";
cin>>jjcc;
if(jjcc="+"){
c=a+b;
cout<<c;
}
}
#include<iostream>
#include<iomanip>
using namespace std;
void main()
{
static int a,b,c;
static char *jjcc;
cout<<"Enter two numbers: ";
cin>>a>>b;
cout<<"Enter +-*/: ";
cin>>jjcc;
if(jjcc="+"){
c=a+b;
cout<<c;
}
}
改为这样就可以了
#include<iostream>
#include<iomanip>
using namespace std;
void main()
{
static int a,b,c;
static char jjcc;
cout<<"Enter two numbers: ";
cin>>a>>b;
cout<<"Enter +-*/: ";
cin>>jjcc;
if(jjcc=='+'){
c=a+b;
cout<<c;
}
}
'+'是一个字符，所以不用*，注意单引号
还有if判断的时候用“＝＝”
static char *jjcc;
==>
static char jjcc;
if(jjcc="+"){
==>
if(jjcc='+'){
#include<iostream>
#include<iomanip>
using namespace std;
void main()
{
static int a,b,c;
static char jjcc;
cout<<"Enter two numbers: ";
cin>>a>>b;
cout<<"Enter +-*/: ";
cin>>jjcc;
if(jjcc=='+'){
c=a+b;
cout<<c;
}
}
=和==是有区别的,前者是赋值运算符