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为什么wa!!实在是无语了。。。#include <stdio.h> #include <string.h> int main() { int r, c, cntx, cnty, i, j, ans, flag; int step[20][20]; char map[20][20]; while(scanf("%d%d%d%*c",&r,&c,&cnty)&&r) { for(i=1;i<=r;i++) { for(j=1;j<=c;j++) map[i][j]=getchar(); getchar(); } memset(step,0,sizeof(step)); ans=1; cntx=1; flag=0; while(1) { switch(map[cntx][cnty]) { case 'E': cnty++;break; case 'W': cnty--;break; case 'N': cntx--;break; case 'S': cntx++;break; } if(!(cntx>=1&&cntx<=r&&cnty>=1&&cnty<=c)) break; else if(step[cntx][cnty]) { flag=1; break; } else { ans++; step[cntx][cnty]=ans; } } if(flag) printf("%d step(s) before a loop of %d step(s)\n",step[cntx][cnty]-1,ans-step[cntx][cnty]+1); else printf("%d step(s) to exit\n",ans); } return 0; } Followed by:
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