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行尾有不等长的垃圾数据。用 while(getchar()!='\n') ; AC。#include<stdio.h>
int main()
{
int n,i,j;
long d;
unsigned char *c = &d;
scanf("%d",&n);
for(i=0;i<n;i++)
{
while(getchar()!='\n') ;
d=0;
for(j=31;j>=0;j--)
if (getchar()=='1') d|=1<<j;
printf("%d.%d.%d.%d\r\n",c[3],c[2],c[1],c[0]);
}
return 0;
}
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