UVa 11398 The Base-1 Number System - 參考答案

Difficulty: Eazy
Ref: UVa Online Judge - UVa 11398 The Base-1 Number System

/*******************************************************/
/* UVa 11398 - The Base-1 Number System                */
/* Author: awei0905  [at]  awei0905.blogspot.tw        */
/* Version: 2017/04/08                                 */
/*******************************************************/
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main() {
 int output = 0, i = 0, flag, len;
 char buf[31];
 while (scanf("%s", buf)) {
  if (buf[0] == '~') break;
  if (buf[0] == '#') {
   printf("%d\n", output);
   output = i = 0;
   continue;
  }
  switch (len = strlen(buf)) {
  case 1:
   flag = 1;
   break;
  case 2:
   flag = 0;
   break;
  default:
   len -= 2;
   if (flag)
    for (int j = 0; j < len; j++) {
     output <<= 1;
     output++;
    }
   else output <<= len;
  }
 }
}

Debug： I/O, uDebug

0 00 #
0 #
00 000#
0 000#
00 0000#
0 0000#
00 #
00 0 #
0 0000 00 000 0 0000 #
0 0000 000 000 000 0000 #
00 0000 000 0000 0 000 #
~

0
0
199
0
27
127
1