## C Program to Find the Largest of three numbers using Pointers

June 5, 2021

In this tutorial, we will write a C program to find the largest of three input numbers using pointers.

## Program to find largest number using pointers

In the following program we have three integers `num1``num2` & `num3`. We have assigned the addresses of these three numbers to three pointers `p1``p2` & `p3` respectively. Later we performed the comparison on the values stored at the addresses pointed by pointers using if else statement.

```#include <stdio.h>
int main()
{
int num1, num2, num3;
int *p1, *p2, *p3;

//taking input from user
printf("Enter First Number: ");
scanf("%d",&num1);
printf("Enter Second Number: ");
scanf("%d",&num2);
printf("Enter Third Number: ");
scanf("%d",&num3);

//assigning the address of input numbers to pointers
p1 = &num1;
p2 = &num2;
p3 = &num3;
if(*p1 > *p2)
{
if(*p1 > *p3)
{
printf("%d is the largest number", *p1);
}
else
{
printf("%d is the largest number", *p3);
}
}
else
{
if(*p2 > *p3)
{
printf("%d is the largest number", *p2);
}
else
{
printf("%d is the largest number", *p3);
}
}
return 0;
}```

Output: