Can main function call itself in C++?

C++Programming Server Side Programming

The main() function can call itself in C++. This is an example of recursion as that means a function calling itself. A program that demonstrates this is given as follows.

Example

Live Demo

#include<iostream>
using namespace std;
int main() {
   static int x = 1;
   cout << x << " ";
   x++;
   if(x == 11) {
      return 0;
   }
   main();
}

Output

The output of the above program is as follows.

1 2 3 4 5 6 7 8 9 10

Now, let us understand the above program.

The variable x is a static variable in main(). Its value is displayed and then it is incremented. Then the if statement is used to provide a means to end the program as otherwise it would call itself infinitely. The program ends when the value of x is 11. Finally, the function main() calls itself using the function call main(). The code snippet for this is given as follows.

int main() {
   static int x = 1;
   cout << x << " ";
   x++;
   if(x == 11) {
      return 0;
   }
   main();
}

Chandu yadav

Published on 21-Nov-2018 12:20:40

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