C++ Program to Add Three Numbers

C++ Basic Programs
➤ Hello World! in C++
➤ Print Number in C++
➤ Add 2 Numbers C++
➤ Arithmetic Operation
➤ Sum Avg of 3 Number
➤ Area Program in C++
➤ Simple Interest in C++
➤ Find ASCII value in C++
➤ Swap 2 Number in C++

Flow Control Programs
➤ Even-Odd in C++
➤ +ve, -ve, 0 in C++
➤ Vowel-Consonant
➤ Greatest of 3 no.
➤ Check Leap Year
➤ Calculator Program
➤ Reverse a Number
➤ Sum of Natural Number
➤ GCD of 2 Number
➤ LCM of 2 Number
➤ Find Power in C++
➤ Fibonacci Series in C++
➤ Palindrome Number
➤ Find Factorial in C++
➤ Factorial Using Recursion
➤ Prime Number in C++
➤ Prime Number b/w 1-N

Array
➤ Linear Search in C++
➤ Binary Search in C++

Others
➤ Introduction to C++
➤ Data Types in C++
➤ Range of Data Types
➤ Void main, main vs int main

Program description:- Write a C++ Program to add three numbers. Take three numbers, calculate the sum of them, display the result.

Steps to develop the program,

Declare three variables to hold/store the input values.
Take three numbers and store them in declared variables.
Declare a sum variable.
Calculate the sum of three numbers.
Display the result.

#include<iostream>
using namespace std;
int main()
{
   // variables
   int n1, n2, n3;
   int sum;

   // take input and store in variables
   cout << "Enter three numbers: ";
   cin >> n1 >> n2 >> n3;

   // calculate sum
   sum = n1 + n2 + n3;
   
   // display result
   cout << "Sum = " << sum << endl; 

   return 0;
}

Output:-

Enter three numbers: 10 20 30
Sum = 60

Enter three numbers: -15 20 10
Sum = 15

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Learn More C++ Programming Examples,

C++ Basic Programs
➤ Hello World! Program in C++
➤ Print Number Entrer by User
➤ Add Two Numbers in C++
➤ Add Subtract Divide Multiply
➤ Sum & Average of 3 Numbers
➤ Area Program in C++
➤ Simple Interest in C++
➤ Find ASCII Value in C++
➤ Swap two Numbers in C++

C++ Flow Control Programs
➤ Check Even or Odd in C++
➤ Check +ve, -ve, 0 in C++
➤ Check Vowel or Consonant
➤ Greatest of three Numbers
➤ Check Leap Year in C++
➤ Calculator Program in C++
➤ Reverse a Number in C++
➤ Sum of Natural Number
➤ GCD of 2 Number in C++
➤ LCM of 2 Number in C++
➤ Find Power of a Number
➤ Fibonacci Series in C++
➤ Palindrome Number in C++
➤ Find Factorial of a Number
➤ Factorial Using Recursion
➤ Check Prime Number in C++
➤ Prime Number b/w 1 to N

Array
➤ Linear Search in C++
➤ Binary Search in C++

Others
➤ Introduction to C++
➤ Data Types in C++
➤ Range of C++ Data Types
➤ Void main, main vs int main

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