为什么这个程序会崩溃

Question

它在执行时崩溃:

#include <iostream>

int main ()

{
    if(main());
    return 0;
}

为什么？

Answer 1

它当然会因Stackoverflow而崩溃,因为没有终止条件,但从技术上讲,C++编译器不允许编译它,因为在C++中:

main() cannot be called from within a program.
The address of main() cannot be taken.
The main() function cannot be overloaded.

标准说的是:

C兼容性的附件

3.6

Change: Main cannot be called recursively and cannot have its address taken
Rationale: The main function may require special actions.
Effect on original feature: Deletion of semantically well-defined feature
Difficulty of converting: Trivial: create an intermediary function such as mymain(argc, argv).
How widely used: Seldom