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Help with the goto thing.

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Help with goto.

Oct 17th, 2008

Is there any other way to the same thing goto does?(You know what i mean i'm just too lazy too explain it right now >.<)
Goto messes everything up >.
For example, let's say i made a game that displays a menu, like:

"1. Play where is waldo
2.Quit"

Then you choose to play "Where is Waldo".
When you find him the program says "You won! and transports you back to the menu using goto.
But the next time you try to play "Where is Waldo" it'll say "You won!" again.
How can i fix that?
I'd like really simple answers, cuz kinda new to C++

And please make an example too.

Last edited by tatainti55; Oct 17th, 2008 at 6:04 pm.

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Re: Help with the goto thing.

Oct 17th, 2008

My guess is that the program needs to reinitialize some variables. But you can almost always avoid using the goto statement at all

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
bool done = false;
int response;
 
while( !done )
{
     response = menu();
     if( response == 2
     {
         done = true;
     }
     else
     {
          // initialize game variables here and
          // play game
     }
}
bool done = false;
int response;

while( !done )
{
     response = menu();
     if( response == 2
     {
         done = true;
     }
     else
     {
          // initialize game variables here and
          // play game
     }
}

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Re: Help with the goto thing.

Oct 17th, 2008

Oh yeah!
Can someone just give me a quick explanation of what bool does?
I kinda understand the conept of it but i don't know how to use it

And i didn't quite understand your explanation

Last edited by tatainti55; Oct 17th, 2008 at 6:13 pm.

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Re: Help with the goto thing.

Oct 17th, 2008

bool is a variable that only contains 0 (false) or 1 (true). You use it only when you want something to be either true or false. I could also have written the while statement like this:
while( done == false)

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Re: Help with the goto thing.

Oct 17th, 2008

bool is the boolean datatype. A variable declared as a bool can have 2 values true (= 1) or false (= 0).

Here is an explanation with an example.

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Re: Help with the goto thing.

Oct 17th, 2008

•

Originally Posted by Ancient Dragon

bool is a variable that only contains 0 (false) or 1 (true). You use it only when you want something to be either true or false. I could also have written the while statement like this:
while( done == false)

So kinda like:

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
bool test;
string input;
 
cout << "hi";
cin >> input;
 
if(input==hi)
 test = 0
 
else
 test = 1
 
if(test = 1)
 cout << "poop";
 
else
 cout << "wow";
bool test;
string input;

cout << "hi";
cin >> input;

if(input==hi)
 test = 0

else
 test = 1

if(test = 1)
 cout << "poop";

else
 cout << "wow";

Is that the main idea of how it works?

Last edited by tatainti55; Oct 17th, 2008 at 6:47 pm.

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Re: Help with the goto thing.

Oct 17th, 2008

not ... exaaactly !!

bool is a datatype .. so you cannot do bool == smthing

I don't know what you're trying to do, but here are some modifications.

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
bool test;
string input;
 
cout << "hi";
cin >> input;
 
if(input==hi)
 test = true;
else
 test = false; 
 
if(test == true)
 cout << "poop";
else
 cout << "wow";
bool test;
string input;

cout << "hi";
cin >> input;

if(input==hi)
 test = true;
else
 test = false; 

if(test == true)
 cout << "poop";
else
 cout << "wow";

Last edited by stilllearning; Oct 17th, 2008 at 6:46 pm.

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Re: Help with the goto thing.

Oct 17th, 2008

•

Originally Posted by stilllearning

not ... exaaactly !!

bool is a datatype .. so you cannot do bool == smthing

I don't know what you're trying to do, but here are some modifications.
Help with Code Tags

C++ Syntax (Toggle Plain Text)
bool test;
string input;
 
cout << "hi";
cin >> input;
 
if(input==hi)
 test = true;
else
 test = false; 
 
if(test == true)
 cout << "poop";
else
 cout << "wow";
bool test; string input; cout << "hi"; cin >> input; if(input==hi) test = true; else test = false; if(test == true) cout << "poop"; else cout << "wow";

sorry, my bad

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Re: Help with the goto thing.

Oct 17th, 2008

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
bool test;
string input;
 
cout << "hi";
cin >> input;
 
if(input=="hi")
 test = false;
 
else
 test = true;
 
if(test == true)
 cout << "poop\n";
else
 cout << "wow\n";
bool test;
string input;

cout << "hi";
cin >> input;

if(input=="hi")
 test = false;

else
 test = true;

if(test == true)
 cout << "poop\n";
else
 cout << "wow\n";