c++ - 没有运算符 "="匹配这些操作数操作数类型是 std::basic_ostream> = int

Question

在 C++ 中运行代码时，我收到错误 no operator "="matches these operands operand types are std::basic_ostream> = int 并且我不确定究竟是什么导致了错误。

#include <iostream>
#include <string>
#include <fstream>
#include <cctype>
using namespace std;

int main()
{
    int num1, num2;
    double average;

    // Input 2 integers
    cout << "Enter two integers separated by one or more spaces: ";
    cin >> num1, num2;

    //Find and display their average
    cout << average = (num1 + num2) / 2;

    cout << "\nThe average of these 2 numbers is " << average << "endl";

    return 0;
}

Answer 1

编译器处理

cout << average = (num1 + num2) / 2;

作为:

(cout << average) = ((num1 + num2) / 2);

参见 C++ operator precedence了解更多详情。

修复:

cout << (average = (num1 + num2) / 2);

更喜欢简单的语句:

average = (num1 + num2) / 2;
cout << average;

---

还有

cin >> num1, num2;

应该是

cin >> num1 >> num2;