Why this code go wrong when i put s=0; in the initial conditions and give a true response when i put this condition after n=i;

Question

#include <iostream>
using namespace std;

int main() {

int a,s=0,i,n;
for (i=11;i<=99;i++)
{
n=i;

cout<<i<<":";
while (n!=0)
{

a=n%10;
s=s*10+a;
n=n/10;
}
cout<<s<<endl;
}

return 0;
}

Answer 1

Nariman Tajari this change in behaviour is due to the value updated in 's' each time the value of 'n' changes. You must make the variable 's' equal to 0 each time after your while loop is completed.

If you do not make s=0 inside the for loop then it will always print the updated value of 's' which will keep on increasing after each iteration.

Answer 2

What Output you expecting can u tell please

Answer 3

I expect the output like this for ex: 12:21 13: 31 14:41 ....
But if i put s=0 in the place i mentioned i face with a bad output like 12:2113 ....