C Program To Find Smallest Of Two Numbers Using Operators

This c program will teach you, how to find smallest of two given numbers using logical operator, conditional or ternary operator and arithmetical operator.

C Program To Determine Smallest Of Two Numbers Using Logical Operator.

#include<stdio.h>
#include<conio.h>
void main()
{
  int a,b;
  clrscr();

  printf("\n Enter any Two numbers\n");

  printf("\n Enter First Number : ");
  scanf("%d",&a);

  printf("\n Enter Second Number : ");
  scanf("%d",&b);

  if(a<b)   //logical test
   {
    printf("\n %d is Smaller",a);
   }
  else
   {
    printf("\n %d is Smaller",b);
   }

 getch();
}

Output :

C Program To Calculate Smallest Of Two Numbers Using Conditional Operator/ Ternary Operator

#include<stdio.h>
#include<conio.h>
void main()
{
  int a,b,c;
  clrscr();

  printf("\n Enter any Two numbers\n");

  printf("\n Enter First Number : ");
  scanf("%d",&a);

  printf("\n Enter Second Number : ");
  scanf("%d",&b);

  c=(a<b) ? a : b ;   // Conditional operator

  printf("\n %d is Smaller",c);

  getch();
}

We have also used the conditional operator to find greatest of two numbers in c, here the condition changes from (a>b) to (a<b) give us the smaller number.

C Program To Find Smallest of Two Numbers Using Arithmetical Operator.

#include<stdio.h>
#include<conio.h>
void main()
{
  int a,b,c;
  clrscr();

  printf("\n Enter any Two numbers\n");

  printf("\n Enter First Number : ");
  scanf("%d",&a);

  printf("\n Enter Second Number : ");
  scanf("%d",&b);

  c=a-b;

  if(c<0)
  printf("\n %d is Smaller",a);

  else
  printf("\n %d is Smaller",b);

 getch();
}

In the above code,

First we get two numbers from user and subtract the first one from second.
If the subtraction is a negative number that means first number (a) is smaller than the second one (b), for example if we take a=4 and b=5 then a-b will be equal to -1 which is a negative number. It means the first number is smaller.
On the contrary if the subtraction is a positive number the second number (b) is smaller than the first one.

Dev C++ Code for the above program

#include<stdio.h>
int main()
{
  int a,b;
  printf("\n Enter Any Two numbers\n");
  
  printf("\n Enter First Number : ");
  scanf("%d",&a);
  printf("\n Enter Second Number : ");
  scanf("%d",&b);

  if(a<b)//logical test
   {
    printf("\n %d is Smaller",a);
   }
  else
   {
    printf("\n %d is Smaller",b);
   }
 getch();
 return 0;
}

Output :