9 replies to this topic

[Mastermind]

The main problem is that the comments are backwards. You need to use // not \\

[Mastermind]

For me, getch doesn't work correctly. The program doesn't display the output first, it just exits when I hit enter again, and I don't see the output.

[Detail]

'void main' :(

#pragma hdrstop
#include <iostream.h>
#include <conio.h>

int main()
{

double HoursPerDay;
double MoneyPerDay;
double Answer;

cout << "How many hours do you work per day?";
cin >> HoursPerDay;
cout << "How many money do you make for the hours?";
cin >> MoneyPerDay;

Answer = HoursPerDay * MoneyPerDay;

    if(HoursPerDay > 24)
      cout << "You Must Be Jocking!!!";
    else
      cout << "You make" << Answer << "Money per day";

  getch();

}

Using void is like saying "please shutdown" to XP when it's running on a 486DX2.

[Mad Ivan]

ok, i repaired it but still the same.

#pragma hdrstop
#include <iostream.h>
#include <conio.h>

int main()
{

 double HoursPerDay;
 double MoneyPerDay;
 double Answer;
/// double blah;

 cout << "How many hours do you work per day?";
 cin >> HoursPerDay; 

   if(HoursPerDay > 24)
    cout << "You Must Be Jocking!!!";
   else
    cout << "How many money do you make for the hours?";
    cin >> MoneyPerDay;

 Answer = HoursPerDay * MoneyPerDay;

   cout << "You make" << ' ' << Answer << ' ' << "$ per day";
   cout <<"\n";

  getch();

}

[Detail]

My code works fine for me.
What error does Dev-C++ say?

[Eradicator]

Mad Ivan you'll have to tell us whats wrong if you want us to help. We can't guess Is it compiling? Is it giving wrong output? What?

[Mad Ivan]

lol.srry.

No errors.
When i compile my program and run it, everything is fine.It works ok, but at the end it simply exits.No matter do i put getch() or void main() with return 0 - it will close after i have entered the second number.

I have attached the program.See that it exitst.

Attached Files

•  Cpp1.exe   200.08KB   70 downloads

[vice]

well, seeing as you've forgotten to put braces around the else code

 if(HoursPerDay > 24)
   cout << "You Must Be Jocking!!!";
  else
 {
   cout << "How many money do you make for the hours?";
   cin >> MoneyPerDay;
 }

im not sure as to what options dev c++ uses when it runs the command prompt, wether to keep it open after program is done executing. however, int main() and return 0; should work.

[Mastermind]

Yeah, it works fine for me with VC 6.0 at school. It displays the press any key to continue. There might be a problem with the input stream not getting flushed correctly.

[Eradicator]

No matter do i put getch() or void main() with return 0

Don't use void main() and return 0. That defeats the purpose of using void. I'm not really sure if I can do a good job of explaining why theres different words there to a beginner but i'll give it a shot.

int is short for integer as you probably know by now. When you declare int main() you are declaring the main function (you can call other functions, but main is the function that will automatically run). The int part comes because you can make a function output a variable. So I could have double main() or whatever. But in most cases you don't really want or need main to output something so in C you can use void main(). Which basically says its a void or null value as in there is not and will never be any data outputted from that function. So therefore it does not make sense to return 0 to a void function because you are not returning anything. return basically says what value to give the function if it can output a value. I hope that is accurate as I'm a bit rusty with c++.