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#include<stdio.h>
#include<string.h>
#include<string>
#include<math.h>
#include<algorithm>
#define LL long long
#define PI atan(1.0)*4
#define DD doublea
#define MAX 100100
#define mod 10007
using namespace std;
int s[100];
char p[]="ABCDEF";
int op[]={10,11,12,13,14,15};
int main()
{
int j,i,len,sum,k;
LL n,m;
while(scanf("%lld",&n)!=EOF)
{
if(n==0)
{
printf("0\n");
continue;
}
k=0;
while(n)
{
s[k++]=n%16;
n/=16;
}
for(i=k-1;i>=0;i--)
{
if(s[i]<10)
printf("%d",s[i]);
else
{
for(j=0;j<6;j++)
{
if(s[i]==op[j])
printf("%c",p[j]);
}
}
}
printf("\n");
}
return 0;
}
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原文地址:http://www.cnblogs.com/tonghao/p/5131399.html