#include<stdio.h>
int fact(int);
int mul(int,int);
int main()
{
int num1,num2,cho;
char c1;
while(1)
{
printf("\n*******SELECT ANY ONE OF THE FOLLOWING OPTION*****\n");
printf("\n1. factorial of a given +ve number\n2. product of given two numbers\n3. sum of given two numbers\n");
scanf("%d",&cho);
switch(cho)
{
case 1:
printf("\nEnter a +ve number\n");
scanf("%d",&num1);
printf("factorial of given number is = %d",fact(num1));
break;
case 2:
printf("\nEnter two +ve number\n");
scanf("%d%d",&num1,&num2);
printf("product of given 2 numbers is = %d",mul(num1,num2));
break;
case 3:
printf("\nEnter two +ve number\n");
scanf("%d%d",&num1,&num2);
printf("sum of given 2 numbers is = %d",add(num1,num2));
break;
default:
printf("*******ENTERED OPTION IS WRONG OPTION******");
}
printf("\nDO YOU WANT CONTINUE y/n\n");
fflush(stdin);
scanf("%c",&c1);
if(c1 == 'y' || c1 =='Y')
continue;
else
break;
}
return(0);
}
int fact(int num1)
{
if(num1 == 0)
return 1;
else
return num1 * fact(num1-1);
}
{
if(num2 == 1)
return num1+1;
else
}
int mul(int num1,int num2)
{
if(num2 == 1)
return num1;
else
return num1 + mul(num1,num2-1);
}

##### Bhanu Namikaze

Bhanu Namikaze is an Ethical Hacker, Security Analyst, Blogger, Web Developer and a Mechanical Engineer. He Enjoys writing articles, Blogging, Debugging Errors and Capture the Flags. Enjoy Learning; There is Nothing Like Absolute Defeat - Try and try until you Succeed.