Find the product of two numbers in C using recursion
In this tutorial, we will discuss a concept of Find the product of two numbers in C using recursion
In this article, we are going to learn how to Find product of two numbers using recursion in the C programming language
Program
This program allows the entry of two digits from the user and to find the product of two numbers using the recursive function in C programming language.
#include <stdio.h>
#include <stdlib.h>
int product(int,int); //function prototype / declaration
int main()
{
int num1,num2,result; //variable declarataion
printf("Enter two number to find their product\n");
scanf("%d %d",&num1,&num2); //numbers receive from the user
result=product(num1,num2);//assign the output to variable result
//function call
printf("PRoduct of %d and %d is %d\n",num1,num2,result);
getch();
return 0;
}
int product(int a, int b) //function definition
{
if(a<b)
{
return product(b,a);
}
else if(b!=0){
return (a+product(a,b-1));
}
else{
return 0;
}
}
When the above code is executed, it produces the following results
Enter two numbers to find their product 40 25 Product of 40 and 25 is:1000
Method
- Declare three variables num1, num2 and result as “int” type.
- Receive two numbers from user and store variable as num1 and num2 respectively.
- Call the function and assign the output value to variable result.
- Product() function is used to Calculate the product of of two numbers.
- Display the result on the screen.
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