foo.c: In function 'main':
foo.c:13:22: warning: 'ex' is used uninitialized [-Wuninitialized]
   13 |         if (local[ex][ey]==0){
      |             ~~~~~~~~~^~~~
foo.c:12:19: note: 'ex' was declared here
   12 |         int sx,sy,ex,ey;
      |                   ^~
foo.c:13:22: warning: 'ey' is used uninitialized [-Wuninitialized]
   13 |         if (local[ex][ey]==0){
      |             ~~~~~~~~~^~~~
foo.c:12:22: note: 'ey' was declared here
   12 |         int sx,sy,ex,ey;
      |                      ^~
foo.c:14:25: warning: 'sx' may be used uninitialized [-Wmaybe-uninitialized]
   14 |                 if (sx+2<9&&sy+1<10)
      |                     ~~~~^~
foo.c:12:13: note: 'sx' was declared here
   12 |         int sx,sy,ex,ey;
      |             ^~
foo.c:14:33: warning: 'sy' may be used uninitialized [-Wmaybe-uninitialized]
   14 |                 if (sx+2<9&&sy+1<10)
      |                             ~~~~^~~
foo.c:12:16: note: 'sy' was declared here
   12 |         int sx,sy,ex,ey;
      |                ^~

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