How to Add Two Large Integers in C++

C++ is the popular programming language that offers all necessary features including object-oriented programming. C++ supports several types of variables including integers, floating point numbers and characters. To work with large integer numbers, C++ allows you to define a special type "long." Using this type, you may handle numbers in the range from -2147483648 to 2147483647.

Instructions

1. Assign the first integer -"238797767," for example - to a variable "number1" using the following operator:

   long number1 = 238797767;

2. Assign the second integer -"965554490", for example - to a variable "number2" using the following operator:

   long number2 = 965554490;

3. Add up the numbers with the operator

   long sum = number1 + number2;

   The variable "sum" holds the sum of two numbers.

4. Print the sum with the following command

   cout << sum;

   In this example, the result is 1204352257.

References

• "C++ Programming"; Larry Ullman et al; 2006
• C++ Documentation: Data Types