﻿ C Program: Add two numbers using call by reference - w3resource

# C Exercises: Add two numbers using call by reference

## C Pointer : Exercise-5 with Solution

Write a program in C to add numbers using call by reference.

Pictorial Presentation:

Sample Solution:

C Code:

``````#include <stdio.h>

int main()
{
long fno, sno, sum;

printf("\n\n Pointer : Add two numbers using call by reference:\n");
printf("-------------------------------------------------------\n");

printf(" Input the first number : ");
scanf("%ld", &fno);
printf(" Input the second  number : ");
scanf("%ld", &sno);
printf(" The sum of %ld and %ld  is %ld\n\n", fno, sno, sum);
return 0;
}
{
long sum;
sum = *n1 + *n2;
return sum;
}
```
```

Sample Output:

``` Pointer : Add two numbers using call by reference:
-------------------------------------------------------
Input the first number : 5
Input the second  number : 6
The sum of 5 and 6  is 11
```

Flowchart:

C Programming Code Editor:

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## C Programming: Tips of the Day

How to format strings using printf() to get equal length in the output?

You can specify a width on string fields, e.g.

`printf("%-20s", "initialization..."); `

And then whatever's printed with that field will be blank-padded to the width you indicate.

The - left-justifies your text in that field.

Ref : https://bit.ly/34DMOc3