C++ double type variables

Introduction

with the cout object used to display the contents of one of the variables. 

#include <iostream>
using namespace std;
int main()//from   www. j  ava  2s. c  o  m
{
   double grade1;   // declare grade1 as a double variable
   double grade2;   // declare grade2 as a double variable
   double total;    // declare total as a double variable
   double average;  // declare average as a double variable
   grade1 = 85.5;
   grade2 = 97.0;
   total = grade1 + grade2;
   average = total/2.0;  // divide the total by 2.0
   cout << "The average grade is " << average << endl;
   return 0;
}



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