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C++ Program to Add Two Numbers
Addition is a basic arithmetic operation. The program to add two numbers performs addition of two numbers and prints their sum on screen.
A program that demonstrates addition of two numbers is given as follows −
Example
#include <iostream>
using namespace std;
int main() {
int num1=15 ,num2=10, sum;
sum = num1 + num2;
cout<<"Sum of "<<num1<<" and "<<num2<<" is "<<sum;
return 0;
}Output
Sum of 15 and 10 is 25
In the above program the sum of two numbers i.e. 15 and 10 is stored in variable sum.
sum = num1 + num2;
After that it is displayed on screen using the cout object.
cout<<"Sum of "<<num1<<" and "<<num2<<" is "<<sum;
A program that uses an array to store two numbers and their sum as well is given as follows −
Example
#include <iostream>
using namespace std;
int main() {
int a[3];
a[0]=7;
a[1]=5;
a[2]=a[0] + a[1];
cout<<"Sum of "<<a[0]<<" and "<<a[1]<<" is "<<a[2];
return 0;
}Output
Sum of 7 and 5 is 12
In the above program, the numbers to be added are stored in the 0 and 1 index of the array.
a[0]=7; a[1]=5;
After that, the sum is stored in the 2 index of the array.
a[2]=a[0] + a[1];
The sum is displayed on screen using the cout object.
cout<<"Sum of "<<a[0]<<" and "<<a[1]<<" is "<<a[2];
Updated on: 23-Jun-2020
11K+ Views
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