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纪念100题,pku的pow函数第一个参数必须为double或者float型,不能为int,又粗心贡献了一次WA,汗~#include<stdio.h> #include<math.h> #include<memory.h> int main() { int n; char str[50]; int a[4]; int i,j,k,temp; scanf("%d",&n); getchar(); while(n--){ gets(str); memset(a,0,sizeof(a)); j = 0; for(i=0;i<32;i++){ temp = str[i] - '0'; k = 7 - i%8; a[j] += temp * (int)pow(2.0,k); if(i%8==7) j++; } printf("%d.%d.%d.%d\n",a[0],a[1],a[2],a[3]); } return 0 ; } Followed by:
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