zoj 3247 Hello World!

#include <iostream>#include <stdio.h>#include <string.h>using namespace std;char v[7][405];int get(char a[]){ int first=a[0]>='0'&&a[0]<='9'? a[0]-'0':10+a[0]-'A'; int sec=a[1]>='0'&&a[1]<='9'? a[1]-'0':10+a[1]-'A'; return first*16+sec;}int main(){ int t,c,i; char a[3];  scanf("%d",&t); int T=0; while(t--) {   T++;    printf("Case %d:n",T);   cout<<endl;   int s=0;   scanf("%d",&c);   memset(v,' ',sizeof(v));  for(int j=0;j<c;j++)for(i=0;i<5;i++)   {    cin>>a;    int n=get(a);    for(int k=0;k<7;k++)    {   if(n%2==1) v[k][s]='#';   n=n>>1;    }     s++;   }  for(int j=0;j<7;j++){   for(int i=0;i<c*5;i++)   {    if(i%5==0 &&i!=0) cout<<" ";    printf("%c",v[j][i]);   }cout<<endl;  }  cout<<endl; } return 0;}