十进制转十六进制

#include <iostream>

using namespace std;int main(){int n = 30;char s[10000];int k = 0;while(n!=0){if(n % 16 >= 10){s[k++] = 'A'+n%16 - 10;}else{s[k++] = '0' + n%16;}n/=16;}for(int i=k-1;i>=0;i--){  cout<<s[i];}cout<<endl;return 0;}