c++ - 从 C++ 中的主函数返回字符串

Question

有什么方法可以从 C++ 中的主函数返回字符串吗？我在下面提到示例程序

string main(int argv, char* argc[])
{
  .
  .
  return "sucess";
}

Answer 1

标准说:

3.6.1 Main function [basic.start.main]

2/ An implementation shall not predefine the main function. This function shall not be overloaded. It shall have a return type of type int, but otherwise its type is implementation-defined. All implementations shall allow both

• a function of () returning int and
• a function of (int, pointer to pointer to char) returning int

as the type of main. [...]

所以不，你必须返回一个整数。

从您对帖子的评论来看，您似乎只想在标准输出上输出一个字符串，然后您可以:

#include <iostream>
int main()
{
    std::cout << "Success" << std::endl;
    // No need for return 0; it is implicit in C++
}

---

正如 Kerrek SB 在评论中所说，return 0; 在 C++ 中是隐含的(标准 § 3.6.1/5):

[...] If control reaches the end of main without encountering a return statement, the effect is that of executing

return 0;