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Repeating loop

 
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Repeating loop, Prompting the user
cRaZi_RiCaN
post 9 Jun, 2007 - 04:51 PM
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Hello I'm trying to make my program ask the "do you want to do this again question?" so the user doesn't have to re run my program between calculations. I tried a series of loops but all of them end up skipping the actual program and just asking the same question over and over again.

Whats the prefered loop for this function or any other way to do it besides a loop?
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Amadeus
post 9 Jun, 2007 - 04:58 PM
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g++ -o drink whiskey.cpp

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If the number of loops is unknown, I would suggest a while or do while loop:

CODE

string answer = "yes";
while(answer=="yes")
{
   //perform calulcations
   cout<<"Do you wish to continue?(yes/no)"<<endl;
   cin>>answer
}
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PennyBoki
post 9 Jun, 2007 - 05:03 PM
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system("revolution");

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Hi, maybe if we see some code your question would be more clear, this way I can guess that most of your program should be in a loop whose condition would determine whether the program will start again or will be terminated.
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cRaZi_RiCaN
post 9 Jun, 2007 - 05:09 PM
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Ok thanks also i dont want to make another topic but i was searching eysterday and didnt find a command/function from the conio.h header that lets me clear the screen. Is there substitues for system("cls");?

that'd be all, thanks!
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Amadeus
post 9 Jun, 2007 - 06:03 PM
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g++ -o drink whiskey.cpp

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There are no standard screen clearing functions - they are compiler/platform dependent. What compiler/operating system are you using?

You can always write a loop of newlines, but dependent functions do exist.
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cRaZi_RiCaN
post 10 Jun, 2007 - 03:14 AM
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I'm using Dev-c++ and windows OS.
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Amadeus
post 10 Jun, 2007 - 06:53 AM
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g++ -o drink whiskey.cpp

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The you should be fine with the system("cls") call...is there a reason you do not want to use? You'll need to include <cstdlib> for c++, stdlib.h for c.
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cRaZi_RiCaN
post 10 Jun, 2007 - 11:26 AM
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Not a particular reason just that since theres is a substitute for system("pause"); (getch(); ) i thought the same for cls, Also system cls works for me without the <cstdlib> header.

This post has been edited by cRaZi_RiCaN: 10 Jun, 2007 - 11:27 AM
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Amadeus
post 10 Jun, 2007 - 11:37 AM
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g++ -o drink whiskey.cpp

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Those are not substitutes...they are not related in any way, it simply seems that way from the actions performed.

getch() is a c function that takes user input from the buffer or stream. system("pause") is a call to an existing executable present on some platforms.

Neither of those methods is compliant to ANSI standards, however...the use of either will limit your application portability.
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cRaZi_RiCaN
post 10 Jun, 2007 - 11:39 AM
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Oh ok, didn't know that thanks.
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