In this example, We take three integer values as input and check which number is largest or greatest among them.

## C Program to find largest number among three numbers:

For finding greatest or largest number we are going to use if...else in and nested if...else.

Example :

```	```
#include  <stdio.h>
void main()
{
int num1, num2, num3;

printf("Enter three integer number :: ");
scanf("%d %d %d", &num1, &num2, &num3);
printf("num1 = %d\tnum2 = %d\tnum3 = %d\n", num1, num2, num3);
if (num1 > num2)
{
if (num1 > num3)
{
printf("num1 is the greatest among three \n");
}
else
{
printf("num3 is the greatest among three \n");
}
}
else if (num2 > num3)
printf("num2 is the greatest among three \n");
else
printf("num3 is the greatest among three \n");
}
```
```

Output :

```	```
//Output :- 1
Enter three integer number :: 100 200 300
num1 = 100      num2 = 200      num3 = 300
num3 is the greatest among three
//Output 2
Enter three integer number :: 200 250 200
num1 = 200      num2 = 250      num3 = 200
num2 is the greatest among three
```
```