What is recursion in C ?


Posted On: Feb 22, 2018


Recursion: A function, which calls itself, recursion is simple to write in program but takes more memory space and time to execute.

Advantages of using recursion:-

  • Avoid unnecessary calling of functions
  • Substitute for iteration
  • Useful when applying the same solution

Factorial program in c using Recursion


int factorial(unsigned int i) {

   if(i <= 1) {
      return 1;
   return i * factorial(i - 1);

int  main() {
   int i = 15;
   printf("Factorial of %d is %d\n", i, factorial(i));
   return 0;

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