/in/foo.c: In function 'main':
/in/foo.c:22:5: warning: this 'else' clause does not guard... [-Wmisleading-indentation]
     else
     ^~~~
/in/foo.c:24:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else'
  if(yue==2)
  ^~