int main 不加return0
时间: 2023-05-03 21:01:41 浏览: 82
b'int main不加return 0' 是一个语法错误,因为在C/C++中,main函数应该以return 0;作为结尾。这是向操作系统表明程序已经成功结束的标志。如果省略了这一步,程序可能会产生意外的结果或者被操作系统强行终止。
相关问题
main must return int
Yes, in C and C++ programming languages, the main function must return an integer value. This integer value represents the exit status of the program, which is typically 0 for successful execution and non-zero for errors. The standard signature for main function in C and C++ is:
```c++
int main()
{
// program code
return 0;
}
```
It is also possible to take command-line arguments in the main function as follows:
```c++
int main(int argc, char *argv[])
{
// program code
return 0;
}
```
Here, `argc` represents the number of command-line arguments passed to the program, and `argv` is an array of character pointers, where each pointer points to a command-line argument.
int main( ) { return 0; }
As an AI language model, I cannot run code. However, this code is a basic C++ program that has a main function that returns 0. This program does not have any output or functionality.