十进制 转n(2-16) 进制

#include<stdio.h>char s[17]="0123456789ABCDEF";void change(int m,int n){    int p=-1;    char a[20];    while(n){        p++;        a[p]=s[n%m];        n=n/m;    }    while(p>=0){        printf("%c",a[p]);        p--;    }    printf("\n");}int main(){    int m,n;    printf("shuru jijinzhi m(2-16):");    scanf("%d",&m);    printf("shuru ni xiang zhuanhua de shuzi :");    scanf("%d",&n);    printf("jieguo shi:");    change(m,n);    return 0;}