C program to add two numbers using function

C program to add two numbers using the function

In this tutorial, we will learn C program to add two numbers using the function

In this topic, we will learn a simple concept of how to add two number using the function in C programming language

already we know the same concept using the operator in a simple way.

if you knew click here C program to the sum of two numbers

This program has following procedures to completion

1. Function declaration or prototype
2. Ask input from the user for values
3. Define the function
4. Call the function
5. Display result on the screen

Program 1

#include <stdio.h>
#include <stdlib.h>
int sum(int , int);//function declaration or prototype
int main()
{
    int num1,num2,total;//variable declaration
    printf("Enter the two number ");
    scanf("%d %d",&num1,&num2);//getting two number as input from user
    total=sum(num1,num2);//calling the function
    //The total value (returned by the function) is stored in total variable.
    printf("The sum of these numbers :%d",total);
    //display the total value
    getch();
    return 0;
}
int sum(int a, int b)//defining function based in declaration
{
    int result=a+b;//find sum of two numbers
    //and result of sum stored in result variable
    return result;//returning result
}

When the above code is compiled and executed, it produces the following results

Enter the two numbers 45
75
The sum of these numbers :120

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