Write a C Program to find Product of two Numbers using Recursion

C Program to find Product of two Numbers


Write a C Program to find Product of two Numbers using Recursion.┬áHere’s simple Program to find Product of two Numbers using Recursion in C Programming Language.


Recursion : :


  • Recursion is the process of repeating items in a self-similar way. In programming languages, if a program allows you to call a function inside the same function, then it is called a recursive call of the function.
  • The C programming language supports recursion, i.e., a function to call itself. But while using recursion, programmers need to be careful to define an exit condition from the function, otherwise it will go into an infinite loop.
  • Recursive functions are very useful to solve many mathematical problems, such as calculating the factorial of a number, generating Fibonacci series, etc.

Below is the source code for C Program to find Product of two Numbers using Recursion which is successfully compiled and run on Windows System to produce desired output as shown below :


SOURCE CODE : :


/* C Program to find Product of two Numbers using Recursion */


#include <stdio.h>
 
int product(int, int);
 
int main()
{
    int a, b, result;
 
    printf("Enter two numbers to find their product: ");
    scanf("%d%d", &a, &b);
    result = product(a, b);
    printf("Product of %d and %d is %d\n", a, b, result);
    return 0;
}
 
int product(int a, int b)
{
    if (a < b)
    {
        return product(b, a);
    }
    else if (b != 0)
    {
        return (a + product(a, b - 1));
    }
    else
    {
        return 0;
    }
}

Output : :


****************** OUTPUT **********************


****************** FIRST RUN ******************

Enter two numbers to find their product:
27
43
Product of 27 and 43 is 1161


****************** SECOND RUN ******************

Enter two numbers to find their product:
123
321
Product of 123 and 321 is 39483

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