/in/foo.c: In function 'main':
/in/foo.c:10:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for(y=0; y<m; y++)
  ^~~
/in/foo.c:13:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
   for(y=0; y<m; y++)
   ^~~
/in/foo.c:8:6: warning: unused variable 'k' [-Wunused-variable]
  int k,m,n,x,y,i=0,j=0,temp;
      ^