UC知道VC++问题输入输出
来源：百度知道 编辑：UC知道 时间：2024/09/19 15:49:56
#include<iostream.h>
void main()
{
int m;
char ch;
cout<<"请输入整数m的值:"<<endl;
cin>>m;
cout<<"请输入字符ch:"<<endl;
cin>>ch;
cout<<"m="<<m<<endl<<"ch="<<ch<<endl;
}
我照着树上的输入，为什么出现这么多错误？
ABC.C(6) : error C2065: 'cout' : undeclared identifier
ABC.C(6) : error C2297: '<<' : illegal, right operand has type 'char [17]'
ABC.C(6) : error C2065: 'endl' : undeclared identifier
ABC.C(7) : error C2065: 'cin' : undeclared identifier
ABC.C(7) : warning C4552: '>>' : operator has no effect; expected operator with side-effect
ABC.C(8) : error C2297: '<<' : illegal, right operand has type 'char [14]'
ABC.C(9) : warning C4552: '>>' : operator has no effect; expected operator with side-effect
AB
void main()
{
int m;
char ch;
cout<<"请输入整数m的值:"<<endl;
cin>>m;
cout<<"请输入字符ch:"<<endl;
cin>>ch;
cout<<"m="<<m<<endl<<"ch="<<ch<<endl;
}
我照着树上的输入，为什么出现这么多错误？
ABC.C(6) : error C2065: 'cout' : undeclared identifier
ABC.C(6) : error C2297: '<<' : illegal, right operand has type 'char [17]'
ABC.C(6) : error C2065: 'endl' : undeclared identifier
ABC.C(7) : error C2065: 'cin' : undeclared identifier
ABC.C(7) : warning C4552: '>>' : operator has no effect; expected operator with side-effect
ABC.C(8) : error C2297: '<<' : illegal, right operand has type 'char [14]'
ABC.C(9) : warning C4552: '>>' : operator has no effect; expected operator with side-effect
AB
试试
#include <iostream>
using namespace std;
void main()
{
int m;
char ch;
cout<<"请输入整数m的值:"<<endl;
cin>>m;
cout<<"请输入字符ch:"<<endl;
cin>>ch;
cout<<"m="<<m<<endl<<"ch="<<ch<<endl;
}
#include<iostream.h>
这一行改成
#include<iostream>
就行啦！
代码没有问题。
你看看是不是工程选错了？
建一个控制台应用程序
我建了个控制台应用程序，把上面的代码拷贝过去，没有问题。
将#include<iostream.h> 改成 #include"iostream.h"试下出错原因是因为头文件没有被正常包含进去。