C Program to Add Two Numbers Using Recursion

Recursion is a programming technique that allows the programmer to express operations in terms of themselves. In C, this takes the form of a function that calls itself.

  1. //C program to add two numbers using recursion
  2. #include <stdio.h>
  3. #include <stdlib.h>
  4. int add(int,int);
  5. int main()
  6. {
  7. int a,b,r;
  8. printf("enter two numbers: ");
  9. scanf("%d %d",&a,&b); //taking input
  10. result=add(a,b); //calling the recursive function
  11. printf("Sum of two numbers are: %d\n",result); //output
  12. getch();
  13. return 0;
  14. }
  15. int add(int a,int b) //recursive function
  16. {
  17. if(y==0)
  18. return a;
  19. else
  20. return(1+add(a,b-1));
  21. }

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