codeblocks - Different answers on different platforms for c++ -

hi ran code on codechef's ide , on codeblocks. got answer different answers: 1001 codeblock 818(correct one) codechef ide. please help!.

code snipplet : http://pastie.org/10223010

#include <iostream> #include <string> #include<sstream> #include<cmath>   using namespace std; int palin(int n); int main() {     int i,t;     int n;     cin>>t;     for(i=0;i<t;i++){     cin>>n;     palin(n);  while(1){         n++;     if(palin(n)==1){         cout<<n<<endl;         break;     }  }     }     return 0; }  int palin(int n){     int len=0;     int m=0;     int dum=n;     while(n!=0){         n=n/10;         len++;      }     n=dum;    while(n!=0){     m=m+((pow(10,(len-1)))*(n%10));     n=n/10;     len--;    }       if(dum==m)         return 1;     else         return 0; } 

problem statement :http://www.codechef.com/problems/palin/

don't use pow() function use float arithmetic , gives wrong answer integer variables

instead use custom power function integer variable, like

int pw(int a, int b){     int ans = 1;     while(b--){         ans *= a;     }     return ans; }