cout 中的 C++ "Invalid operands to binary expression"

Question

C++ 新手在 cout 尝试输出文本时遇到奇怪的错误。这是我的代码中有问题的区域:

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

int main()
{
    string courseName, courseNum;

cout << "Enter a four letter course name: ";
cin >> courseName >> endl;

cout << "Enter a three digit course number: ";
cin >> courseNum >> endl:

return 0;
}

错误出现在以下几行:

cout << "Enter a four letter course name: ";

和

cout << "Enter a three digit course number: ";

这里有什么问题吗？

Answer 1

试试这个:

cout << "Enter a four letter course name: ";
cin >> courseName;

cout << "Enter a three digit course number: ";
cin >> courseNum;

代替

cin >> courseNum >> endl:

如果那不是打字错误，那么我怀疑您可能遇到了 Most vexing parse 的问题。 (虽然这是我的猜测)