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Why doesn't this loop work?
#1
Code:
#include <iostream>
using namespace std;int main(){int x=1;while(x<=99){x=x+1;cout<<x<< endl;return 0;}}

The output is 2, why isn't it:
2
3
4
5
6
7
8
9
10
etc...
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#2
Because you return the function within the while loop....

Your code
Code:
return 0;}}
Right code
Code:
}return 0;}
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#3
Using return will stop the program in it's track, no matter what operation it's currently undergoing. For example, you can use return 1 for error checking.
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#4
(11-10-2009, 11:45 PM)nevets04 Wrote:
Code:
#include <iostream>
using namespace std;int main(){int x=1;while(x<=99){x=x+1;cout<<x<< endl;return 0;}}

Please tell me you don't really lay your code out like that?
Code:
#include <iostream>
using namespace std;

int main()
{
    int x=1;
    while(x<=99)
    {
        x=x+1;
        cout<<x<< endl;
        return 0;
    }
}
Makes it much clearer why it is going wrong (because return is inside the loop). Also you might want to look into a for loop (and pre/post increment operators).

Code:
#include <iostream>
using namespace std;

int main()
{
    for(int x = 1; x <= 99; ++x)
        cout << x << endl;
    return 0;
}
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The little boat gently drifted across the pond exactly the way a bowling ball wouldn't.
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#5
(11-11-2009, 07:14 AM)MrD. Wrote: Please tell me you don't really lay your code out like that?
Code:
#include <iostream>
using namespace std;

int main()
{
    int x=1;
    while(x<=99)
    {
        x=x+1;
        cout<<x<< endl;
        return 0;
    }
}
Makes it much clearer why it is going wrong (because return is inside the loop). Also you might want to look into a for loop (and pre/post increment operators).

Code:
#include <iostream>
using namespace std;

int main()
{
    for(int x = 1; x <= 99; ++x)
        cout << x << endl;
    return 0;
}

I do that for shorter programs
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#6
so so simple...

your return 0; will return to OS ... not return to loop

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