进制转换

#include<stdio.h>
main()
{
	int n,m,i,j,a[100]={0},k;
	while(scanf("%d%d",&n,&m)!=EOF)
	{
		i=0;
		if(n>=0)k=n;
		else k=-n;
		while(k!=0)
		{
			a[i]=k%m;
			k/=m;
			i++;
		}
		if(n<0)printf("-");
		for(j=i-1;j>=0;j--)
		{
			if(a[j]>=10)
			{
				printf("%c",a[j]-10+'A');
				continue;	
			}
				
			printf("%c",a[j]+'0');
		}
		printf("\n");
	}
}