[C ++ Basics] 012 _ Play Main Function

Well, have you ever wondered whether the main function can be declared? Let's try it!

1 # include <iostream> 2 using namespace STD; 3 4 int main (); 5 6 int main () {7 system ("pause"); 8 return 0; 9}

There is no problem at all. It can be seen that main is also a very common function!

Can a common function call the main function? Let's try again!

1 # include <iostream> 2 using namespace STD; 3 4 int main (); 5 6 void test () {7 main (); 8} 9 10 int main () {11 test (); 12 system ("pause"); 13 return 0; 14}

Compilation is successful, but we can see that this is a dead chain. Haha, check the running effect!

Oh, my God, not good:

The 0x772115de in 005_inline.exe has an unhandled exception: 0xc00000fd: Stack Overflow.

Stack Overflow, dead chain, haha!

Even if you add anti-dead-chain code, stack overflow will still occur ~~