In this tutorial, we will write a program to find the sum of numbers using pointers in C program. Before that, you should have knowledge on the following topic in C:

## C Program to Add Two Numbers using Pointers

The program takes the two numbers from the user and finds the sum of those numbers in C.

Output:

`Enter the first number: 10Enter the Second number: 20`
`Sum of two numbers: 30`

## C program to add two numbers using call by reference

The program takes the two numbers from the user and passes the reference to the function where the sum is calculated. You may go through the topic below.

Output:

`Enter the first number: 15.5Enter the Second number: 20.5Sum of the result: 36.000000`

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