Need Help...

This is a discussion on Need Help... within the C++ Programming forums, part of the General Programming Boards category; Hello fellow peeps!!!! Ok, here it goes.... I have been messing around with Microsoft Visual Studio for Vista. I have ...

  1. #1
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    Need Help...

    Hello fellow peeps!!!!
    Ok, here it goes.... I have been messing around with Microsoft Visual Studio for Vista. I have been writing code, simple and advanced, and in some instances when i compile and run the program it will exit way too fast and not let me read the response to the code.
    Here is a simple example in which the code exits before you can even attempt to read the result.
    Code:
    #include <iostream>
    using namespace std;
    
    int main()
    {
    	int gallons, liters;
    
    	cout << "Enter number of gallons: ";
    	cin >> gallons;
    
    	liters = gallons * 4;
    
    	cout << "Liters: " << liters;
    
    	return 0;
    }
    Let me thank you in advance, any help with this will be appreciated.

  2. #2
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    have the program ask for input from the user so it waits for an answer
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    in my computer it does wait for input after you enter it and press enter it just jets thru it and terminates

  4. #4
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    My mantra has always been "run command line programs from the command line". Pop open a dos box, find your program, and run it.

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    cin >> gallons; ----> Doesn't this get input from the user?

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    yeah, do that right before you return 0, although it would probably be better to use cin.get() (if that's the right function)
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    ok i added the: cin.get() before the return 0; and i was able to read the result for a split second but still way too fast to accurately read it.

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    Quote Originally Posted by francusmag View Post
    ok i added the: cin.get() before the return 0; and i was able to read the result for a split second but still way too fast to accurately read it.
    yeah, it "got" the '\n' that was in the buffer, I use system("PAUSE") anyway
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    lol sorry dont get it.!!!! o.o

  10. #10
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    when you read in for gallons you used the enter/return bar which sent a newline character '\n' to the input buffer, cin >> gallons left that in the buffer and cin.get() grabbed it from the buffer, if you are using windows you can use system("PAUSE"), you might need to include windows.h
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    how would i do this? This is what i have so far:
    Code:
    #include <iostream>
    using namespace std;
    int main()
    {
     	int gallons, liters;
       
    
    	cout << "Enter number of gallons: ";
    	cin >> gallons;
        liters = gallons * 4;
    
    	cout << "Liters: " << liters;
    	
    	cin.get();
    	return 0;
    }

  12. #12
    and the Hat of Guessing tabstop's Avatar
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    What is being suggested is not really a hard substitution here:
    Code:
    #include <iostream>
    using namespace std;
    int main()
    {
     	int gallons, liters;
       
    
    	cout << "Enter number of gallons: ";
    	cin >> gallons;
        liters = gallons * 4;
    
    	cout << "Liters: " << liters;
    	
    	system("PAUSE");
    	return 0;
    }
    (Technically you need #include <cstdlib> at the top as well, I guess.)

  13. #13
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    Quote Originally Posted by francusmag View Post
    how would i do this? This is what i have so far:
    Code:
    #include <iostream>
    using namespace std;
    int main()
    {
     	int gallons, liters;
       
    
    	cout << "Enter number of gallons: ";
    	cin >> gallons;
        liters = gallons * 4;
    
    	cout << "Liters: " << liters;
    	
    	cin.get();
    	return 0;
    }
    change cin.get() to system("PAUSE")
    If it says it's not defined then include the windows header
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  14. #14
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    If it says it's not defined then include the windows header
    system() is in cstdlib, not windows.h.

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    ok this does work to perfection pausing the code so that you can read it....
    Thank you guys so much!!!
    Now a new problem arrives... The response to the code after compiling and running is:

    Enter number of gallons: (number entered appears)
    Liters: (answer) (and directly following the last digit of the answer)Press any key to continue...

    Question how can i make that last text after the last digit appear in a new line.

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