CPP Defining Variables

Defining variables in C++.

To define a variable you start with the type and then the variable name.
Source code Result
// Demonstration of variables
#include <iostream>

int main() {
   using std::cout;
   using std::endl;
   // width and length is both variables of same type
   // but only width is  given a value when defined;
   unsigned short int width = 25, length;
   length = 12;

   // create  an unsigned short and initialize with result
   // of multiplying width by length
   unsigned short int area  = (width * length);

   cout << "Width:" << width << "\n";
   cout << "Length: "  << length << endl;
   cout << "Area: " << area << endl;
   return 0;
Length: 12
Area: 300

C++ is case sensitive. In other words, uppercase and lowercase letters are considered to be different when you a naming a variable.

You can download this example here (needed tools can be found in the right menu on this page).

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