【HDOJ】2707 Steganography

简单字符串，读懂题，很容易AC。

 #include <stdio.h>
 #include <string.h>

 char buf[], line[], des[];

 int main() {
     int i, k, tmp, len;
     int ib, id;

     memset(buf, , sizeof(buf));
     ib = ;

     while (gets(line) != NULL) {
         len = strlen(line);
         if (len== && line[]=='#')
             break;
         if (len== && line[]=='*') {
             id = ;
             for (i=; i<ib; i+=) {
                 tmp = (buf[i]<<) + (buf[i+]<<) + (buf[i+]<<) + (buf[i+]<<) + (buf[i+]);
                 if (tmp == )
                     des[id] = ' ';
                 else if (tmp == )
                     des[id] = '\'';
                 else if (tmp == )
                     des[id] = ',';
                 else if (tmp == )
                     des[id] = '-';
                 else if (tmp == )
                     des[id] = '.';
                 else if (tmp == )
                     des[id] = '?';
                 else
                     des[id] = tmp-+'A';
                 ++id;
             }
             des[id] = '\0';
             printf("%s\n", des);
             ib = ;
             memset(buf, , sizeof(buf));
         } else {
             k = ;
             for (i=; i<len; ++i) {
                 if (k && line[i]!=' ') {
                     buf[ib++] = !(k&);
                     k = ;
                 } else if (line[i] == ' '){
                     ++k;
                 }
             }
         }
     }

     return ;
 }