recursive function in c

 #include<stdio.h>

int factorial (int number)

{if ( number == 0 || number ==1)

    return 1;

    else

    

        return ( number * factorial ( number -1));

    

    

}

int main(int argc, char const *argv[])

{ 

     int num;

    

    printf(" enter the num you want to print factorial \n");

    scanf("%d",&num);

    printf(" the factorial of %d is %d ", num , factorial(num));

    return 0;

}

The process in which a function calls itself directly or indirectly is called recursion and the corresponding function is called as recursive function. Using recursive algorithm, certain problems can be solved quite easily.