Greatest number among three numbers in C

 #include<stdio.h>

int main()

{

int num1,num2,num3;

printf("Enter any three number :\t");

scanf("%d\t%d\t%d",&num1,&num2,&num3);

  printf("\t Program to find greatest number among three number\n");

  

  if(num1>num2)

  {

  if(num1>num3)

  {

  printf("1st number is greater");

  }

  else

  {

  printf("3rd number is greater");

  }

  }

  else if(num2>num1)

  {

  if(num2>num3)

  {

  printf("2nd number is greater");

  }

  else

  {

  printf("3rd number is greater");

  }

  }

}

output:

Enter any three number :        12

22

33

         Program to find greatest number among three number

3rd number is greater

OR

By using nested if in C:

#include<stdio.h>

int main()

{

int num1,num2,num3;

printf("Enter any three number :\t");

scanf("%d\t%d\t%d",&num1,&num2,&num3);

  printf("\t Program to find greatest number among three number\n");

  

  if(num1>=num2)

  {

  if(num1>num3)

  {

  printf("%d number is greatest",num1);

  }

  else

  {

  printf("%d number is greatest",num3);

  }

  }

  else if(num2>=num1)

  {

  if(num2>num3)

  {

  printf("%d number is greatest",num2);

  }

  else

  {

  printf("%d number is greatest",num3);

  }

  }

}

Output:

Enter any three number :        12

22

33

         Program to find greatest number among three number

33 number is greatest