do {} while question (User==gulible)

[vlad61]

#include <iostream>

using namespace std; // So the program can see cout and endl

int main()
{
    int x=0, j=1;
    do {
    cout<<"Enter any number other than 5: ";
    cin>>x;
    cin.ignore();
    if (x==5) {
        cout<<"You were not supposed to enter 5";
    }
    else if (j==10) {
        cout<<"You are more patient than I thought...you win.";
    }
        j++;
    } while(x!=5&&j<=10);

  cin.get();
}

Hi, I am a little confused by the inconsistency of what the code says and what the program does. The underlined code tells the program to continue to run as long as j is LESS than or equal 10.. but it continues running until 10 iterations of the program have passed. Can anyone explain this? Thank you

[Bazzy]

Where is the inconsistency? It does what it should
_{http://www.cplusplus.com/forum/articles/12974/} :

★ Modify the program so that after 10 iterations if the user still hasn't entered 5 will tell the user "Wow, you're more patient then I am, you win." and exit.

[vlad61]

Well, when I read the code it says as long as j IS 10 or IS LESS THAN 10. Since the program is Always less then 10 until the 10th iteration I began writing that part of the code as: j==10 and it wasn't until I cheated and looked at how they wrote it that I found out it's supposed to be less than or equal to 10. I wrote "==" because I want the program to stop on the 10th iteration not on less than 10 iterations, which is what I thought it would do but it doesn't... it works fine.

[Athar]

You seem to think that when the while condition is true, the loop stops, but that is not the case.
It's the condition for which the loop continues.

[Bazzy]

while ( j <= 10 ) means "if j is less than ( or equal to ) 10 continue with the loop, if it's greater stop"
while ( j == 10 ) means "if j is equal to 10 continue with the loop, if it's anything else stop"
There's no inconsistency

[helios]

That's why it's called while loop and not until loop. While the condition is true, the loop continues.

[vlad61]

Thank you very much for all the in depth explanations. I completely understand my error now.