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Can main function call itself in C++?
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
#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();
}
Updated on: 26-Jun-2020
1K+ Views
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