for() loop

[vlad61]

I am trying to do do the

While( user == gullible )

in every single looping state so that I can understand all of them well. Have fully completed it with the do{}while loop. The for loop is giving me trouble though, this is what I have so far -

#include <iostream>

using namespace std;

int main()
{
    for(int x=0; x!=5;) {
        cout<<"Enter any number other than 5: ";
        cin>>x;
        cin.ignore();
    if (x==5) {
    cout<<"You werent supposed to enter 5...";
        }
    }
cin.get();
}

The first part of the challenge works fine. To do the first star however I would need another variable to count how many times I press enter and the loop structure doesn't allow me to use more than one variable. Any ideas?

[aidyszh]

Actually i'm not sure what do want to do. But i'm sure about one thing, you can use more than one variable in a for loop.

int i, j;
for(i = 0, j = 0; i<5 && j<10; ++j)
{
  // TODO
  // ++i;
}

[vlad61]

http://cplusplus.com/forum/articles/12974/ - While( user == gullible ) - I am trying to do the 1st star of the problem. well hmmm if you say i can use more than one variable in it then i will continue experimenting.

EDIT: ah... so you can declare the variables outside of the for loop. okay I will try that

[vlad61]

lol it worked like a charm. Thanks...it was the tutorial i read that caused the confusion...http://www.cprogramming.com/tutorial/lesson3.html, it exemplifies placing the variables inside the for loop and i thought I must do it like that. Sorry for the simple question.

[vlad61]

Nvm... it does not work like a charm...

#include <iostream>

using namespace std;

int main()
{
    int x;
    int j;
    for(x=0; x!=5; j=1; j<=10) {
        cout<<"Enter any number other than 5: ";
        cin>>x;
        cin.ignore();
    if (x==5) {
    cout<<"You werent supposed to enter 5...";
        }
j++;
    }
cin.get();
}

[mcleano]

The format of a for loop is as follows: for (initialization; condition; variable change) statement;

What you have is: for (initialization, condition; initialization, condition) { code block; } - the variable change is not necessarily required.

See if you can correct your code with this information.

[vlad61]

I can't do it. I have tried changing and rearranging the same code over and over but it is not working...

EDIT: im going to re-write it from scratch.

#include <iostream>
using namespace std;
int main()
{
    int x, j;
        for (x=0, j=1; x!=5 &&  j<=10; j++) {
    cout<<"Enter number: ";
    cin>>x;
        }
}

EDIT: this worked...