C Program to Add Two Numbers using Pointers

Ex: Write a C program to add two numbers using pointers. How to write C program to add two numbers using pointers. C program to add two numbers using pointers.

Input from user:

Enter Number1: 10

Enter Number2: 20

Expected output:

Sum= 30

  Step by step logic of the given program:

1. Accept input (numbers) from user.

2. Store address of no1 in pointer variable ptr1 and store address of no2 in variable ptr2 using reference operator (&):

ptr1=&no1;

ptr2=&no2;

3. After that add two numbers using dereference operator(*):

sum=*ptr1+*ptr2;

4. Last print sum on the output screen.

  Program to Add Two Numbers using Pointers:

#include<stdio.h>

int main()

{

int no1,no2,sum;

int *ptr1,*ptr2;

printf("Enter number1:\n");

scanf("%d",&no1);

printf("Enter number2:\n");

scanf("%d",&no2);

ptr1=&no1;// it stores address of no1

ptr2=&no2;// it stores address of no2

sum=*ptr1+*ptr2;// it adds values at address no1 & no2

printf("Sum= %d",sum);

return 0;

}

Above program shows the following output: