This code is not printing anything I have tried different compilers

Question

1.00/5 (1 vote)

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#include <bits/stdc++.h>
using namespace std;

int main() {
    int n, m;
    cin >> n >> m;

    int sock = n;
    int count = 0;

   while (sock > 0) {
        count+=1;

        if (sock % m == 0) {
            sock++;
        }
            sock--;
    }

    cout << count << endl;

    return 0;
}

What I have tried:

actually i was workink with while loops but there is some problem in my code there is no printing anything i have checked it with different approaches but no solution is coming

Posted 8-Jan-24 5:45am

awesome priyanshu

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0x01AA 8-Jan-24 11:55am

If I enter '4' and '6' then it prints '4'.
If I enter '6' and '4' then it loops endless.
So, think about your target and use the debugger

2 solutions

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Richard MacCutchan · Accepted Answer · 2024-01-08T05:56:00

Solution 1

I think the problem is here:

C++

if (sock % m == 0) {
    sock++;
}
    sock--; // If you add 1 to sock and then subtract 1 it will go on for ever

but I am not sure what those lines of code are supposed to do.

Posted 8-Jan-24 5:56am

Richard MacCutchan

Comments

CPallini 9-Jan-24 2:15am

5.

OriginalGriff · Accepted Answer · 2024-01-08T06:14:00

As soon as sock is divisible by m, it is incremented and immediately decremented again - so the next loop iteration has the same value of sock and the loop never exits.
Since the loop never exits, the code never reaches the cout and you never see any output.

To be honest, 2 minutes with the debugger would have shown you that for yourself: get used to testing your code in the debugger as it's the best development friend you have!