IP Address

IP Address

Time Limit: 1000ms   Memory limit: 65536K  有疑问？点这里^_^

题目描述

Suppose you are reading byte streams from any device, representing IP addresses. Your task is to convert a 32 characters long sequence of '1s' and '0s' (bits) to a dotted decimal format. A dotted decimal format for an IP address is form by grouping 8 bits at a time and converting the binary representation to decimal representation. Any 8 bits is a valid part of an IP address. To convert binary numbers to decimal numbers remember that both are positional numerical systems, where the first 8 positions of the binary systems are:

输入

The input will have a number N (1<=N<=9) in its first line representing the number of streams to convert. N lines will follow.

输出

The output must have N lines with a doted decimal IP address. A dotted decimal IP address is formed by grouping 8 bit at the time and converting the binary representation to decimal representation.

示例输入

400000000000000000000000000000000 00000011100000001111111111111111 11001011100001001110010110000000 01010000000100000000000000000001

示例输出

0.0.0.03.128.255.255203.132.229.12880.16.0.1

提示

 

来源

 

示例程序

 

#include<stdio.h>  #include<math.h>  int main()  {      int i,j,n,m,k,t,x1,x2,x3,x4;      char a[50];      scanf("%d",&n);      while(n--)      {          x1=0;          x2=0;          x3=0;          x4=0;          scanf("%s",a);          for(i=0,j=7;i<8;i++,j--)              if(a[i]=='1')              x1+=pow(2,j);          for(i=8,j=7;i<16;i++,j--)              if(a[i]=='1')              x2+=pow(2,j);          for(i=16,j=7;i<24;i++,j--)              if(a[i]=='1')              x3+=pow(2,j);          for(i=24,j=7;i<32;i++,j--)              if(a[i]=='1')              x4+=pow(2,j);          printf("%d.%d.%d.%d\n",x1,x2,x3,x4);      }  }