HDUOJ 1033 Edge

 1 #include <iostream>
 2 #include <stdio.h>
 3 #include <string.h>
 4 using namespace std;
 5 
 6 int main()
 7 {
 8     char command[201];
 9     int len, x, y, i, cur_direction;                  //cur_direction: 1 means north, 2 means east, 3 means south, 4 means west
10     while(scanf("%s", command) != EOF)
11     {
12         len = strlen(command);
13         printf("300 420 moveto\n310 420 lineto\n");
14         i = 0; x = 310; y = 420;
15         cur_direction = 2;
16         while(i < len)
17         {
18             switch(cur_direction)
19             {
20             case 1:
21                 if(‘V‘ == command[i]) {printf("%d %d lineto\n", x-=10, y); cur_direction = 4;}
22                 else {printf("%d %d lineto\n", x+=10, y); cur_direction = 2;}
23                 break;
24             case 2:
25                 if(‘V‘ == command[i]) {printf("%d %d lineto\n", x, y+=10); cur_direction = 1;}
26                 else {printf("%d %d lineto\n", x, y-=10); cur_direction = 3;}
27                 break;
28             case 3:
29                 if(‘V‘ == command[i]) {printf("%d %d lineto\n", x+=10, y); cur_direction = 2;}
30                 else {printf("%d %d lineto\n", x-=10, y); cur_direction = 4;}
31                 break;
32             case 4:
33                 if(‘V‘ == command[i]) {printf("%d %d lineto\n", x, y-=10); cur_direction = 3;}
34                 else {printf("%d %d lineto\n", x, y+=10); cur_direction = 1;}
35                 break;
36             }
37             ++i;
38         }
39         printf("stroke\nshowpage\n");
40     }
41     return 0;
42 }