# C Program To Find Greater Number. Among Given Three Number

Problem :- Write a C Program for find a greatest number among given three number .ex-you have to given three number ,number may be Integer, Float, Double You Task is to find a Greatest number Input given by User

Logic :- To solve this problem we need to compare all three numbers each other .for better explanation we need three number assume that numbers are 17 ,45 ,56

Step 1 :- First We Compare 17 to 45 and 56 if it is greatest then we can say that 17 is greatest else we go to next step

Step 2:- Then we compare 45 to 56 and 17  if it is greatest then we can say that 45 is greatest else we go to next step

Step 3:- Then we compare 56 to 45 and 17  if it is greatest then we can say that 56 is greatest else we go to next step (Special Case)

Step 4:- This is the last case if all numbers are same or equal then it will print a message that
" All INPUT ARE EQUAL "

Solution :-

Method 1:-

#include <stdio.h>
int main()
{
Visit http://www.programmingwithbasics.com/
*/
double num1, num2, num3;

printf("Enter Three Numbers: ");
scanf("%lf %lf %lf", &num1, &num2, &num3);

if (num1>=num2)
{
if(num1>=num3)
printf("%.2lf Is The Largest Number. ", num1);
else
printf("%.2lf Is The Largest Number. ", num3);
}
else
{
if(num2>=num3)
printf("%.2lf Is The Largest Number. ", num2);
else
printf("%.2lf is the largest number.",num3);
}

return 0;

}

Method 2:-

#include<stdio.h>

int main()
{
Visit http://www.programmingwithbasics.com/
*/
double num1, num2, num3;

printf("Enter Three Numbers: \n");
scanf("%lf %lf %lf", &num1, &num2, &num3);

if (num1 > num2 && num1 > num3)
printf("\nGreatest Number Is :%lf",num1);

else if (num2 > num3 && num2 > num1)
printf("\nGreatest Number Is :%lf",num2);

else if (num1 > num1 && num3 > num2)
printf("\nGreatest Number Is :%lf",num1);

else if ((num1==num2) && (num2==num3) && (num3==num1))
printf("\nAll Are Equal");

}

Output :-