Hdu 2051解题报告

Problem Description

Give you a number on base ten,you should output it on base two.(0 < n < 1000)

 

Input

For each case there is a postive number n on base ten, end of file.

 

Output

For each case output a number on base two.

 

Sample Input

123

 

Sample Output

11011

#include<iostream>using namespace std;char a[100];int Bin(int n){     int j = 1;     while(n>=2)     {        a[j++] = n%2+'0';        n = n/2;     }     a[j] = n+'0';          return j;}int main(void){    int n;        while(~scanf("%d",&n))    {         int count = Bin(n);         for(int i=count;i>0;--i)             printf("%c",a[i]);         printf("\n");    }        return 0;}