C++ LANGUAGE THE CONST KEYWORD PAGE 31

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C++ LANGUAGE THE CONST KEYWORD

The const Keyword 

You can use const prefix to declare constants with 
a specific type as follows: 

const type variable = value; 

Following example explains it in detail: 

#include <iostream> 
using namespace std; 
 
int main() 
{ 
   const int  LENGTH = 10; 
   const int  WIDTH  = 5; 
   const char NEWLINE = '\n'; 
   int area;   
    
   area = LENGTH * WIDTH; 
   cout << area; 
   cout << NEWLINE; 
   return 0; 
} 
When the above code is compiled and executed, 
it produces the following result: 

50 

Note that it is a good programming practice to define constants in CAPITALS.