首先,下面是代码:
#include <iostream>
#include <stdlib.h>
using namespace std;
int add(int x,int y){
return x+y;
}
int sub(int x,int y){
return x-y;
}
int divide(int x,int y){
return x/y;
}
int mult(int x,int y){
return x*y;
}
void operation(string operation,int x,int y){
if(operation=="addition"){
cout << add(x,y);
}
else if(operation=="subtraction"){
cout << sub(x,y);
}
else if(operation=="multiplication"){
cout << mult(x,y);
}
else if(operation=="division"){
cout << divide(x,y);
}
}
int main(int argc, char *argv[]){
while(true){
string operation;
int x;
int y;
cout << "Please enter your operation: ";
cin >> operation;
cout << endl << "Please enter the first number: ";
cin << x;
cout << endl << "Please enter the second number: ";
cin << y;
cout << endl;
operation(operation,x,y)
}
}
system("PAUSE");
return 0;
}
我遇到的问题是我想让用户使用 cin 输入 x 和 y,但由于某种原因,我得到了标题中显示的错误(主要.cpp与"std::istream&<<int&"运算符不匹配)我认为这可能与我初始化变量的方式有关,但我不知道它是否可能是其他东西。
感谢您的帮助!
看看 A Gentle Introduction to C++ IO Streams。您应该将<<用于cout,>>用于cin。