Question

C language: P14. Ask a user for three positive integer numbers. Use an input valiadation loop to make sure that all numbers are positive, ask again if not. Determine the smallest, middle and largest number and display them with proper labeling (Smallest=AA, Middle=BB, Largest=CC).

Answer 1

#include <stdio.h>

int isPrime(int num)
{
   int i;
   if (num <= 1) return 0;
   if (num % 2 == 0 && num > 2) return 0;
   for (i = 3; i <= sqrt(num); i += 2)
   {
      if (num % i == 0)
         return 0;
   }
   return 1;
}


int main() { 
   int a,b,c,Smallest,Middle,Largest;
   do{
      printf("Enter value for a: ");
      scanf("%d",&a);
   }while(a<=0);
   
   do{
      printf("Enter value for b: ");
      scanf("%d",&b);
   }while(b<=0);
   
   do{
      printf("Enter value for c: ");
      scanf("%d",&c);
   }while(c<=0);
   
   if(a<b && a<c){
      Smallest = a;
      if(b<c){
         Middle = b;
         Largest = c;
      }
      else{
         Middle = c;
         Largest = b;
      }
   }
   else if(b<c){
      Smallest = b;
      if(a<c){
         Middle = a;
         Largest = c;
      }
      else{
         Middle = a;
         Largest = b;
      }
   }
   else{
      Smallest = c;
      if(b<a){
         Middle = b;
         Largest = a;
      }
      else{
         Middle = a;
         Largest = b;
      }
   }
   
   printf("Smallest=%d, Middle=%d, Largest=%d",Smallest,Middle,Largest);
   return 0;
}