Wednesday, 6 June 2012

C++ Program to implement calculation on any entered two numbers

C++ Program to implement calculation on any entered two numbers


#include <iostream.h>
#include <conio.h>
float a;
float b;
float result;
int op;
int option;
int main()


    {
    do
    {
        cout << "Enter First Number \n";
        cin >> a; // Input
        cout << "Enter Second Number \n";
        cin >> b;
        cout << "Please enter an Option..\n";
        cout << "[1] Add \n";
        cout << "[2] Substract \n";
        cout << "[3] Multiply \n";
        cout << "[4] Devide \n ";

        cin >> op; // The keybord input is passed to variable 'op'

        switch (op)// switch is similar to Select Case in VB
        {
            case 1 : // Case Addition
                result=a+b;
                break;
            case 2 : //Case Substraction
                result=a-b;
                break;
            case 3 : // Case multiplication
                result=a*b;
                break;
            case 4 : // Case Division
                result=a/b;
        }
        cout <<"The Result is..= " << result << "\n\n"; //Display Result and Skipping two Lines
        cout << "Enter an Option..\n";
        cout << "[0] Exit.\n";
        cout << "[1] Continue. \n";
        cin >> option;
        // Do While loop Ends Here
    } while (option==1);    // If option is 1 ie 'Continue' the above code is Looped else ( option<>1 ) it is Escaped from Loop

    return 0;// the ' main' function returns value 0
    }

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