将十六进制转化为点分十进制，如0xffffffff为255.255.255.255

#include 
     
      int main(){    int src=0xffffffff;    printf("请输入十六进制地址：");    while(scanf("%x",&src)!=EOF)    {        int res[4];        int times=4;        while(times>0)        {            int temp=0x000000ff;            temp=temp&src;                        res[times-1]=temp;            src=src>>8;            times--;        }        for(times=0;times<4;times++)        {            printf("%d",res[times]);            if(times<3) {putchar('.');}            else {putchar('\n');}        }        printf("请输入十六进制地址：");    }    return 0;}