/in/foo.cc: In function 'int main()':
/in/foo.cc:13:2: warning: this 'else' clause does not guard... [-Wmisleading-indentation]
  else
  ^~~~
/in/foo.cc:21:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else'
   int num;
   ^~~
/in/foo.cc:22:44: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   if(month=4||month==6||month==9||month==11)//或者||并且&&
                                            ^
/in/foo.cc:24:3: warning: this 'else' clause does not guard... [-Wmisleading-indentation]
   else
   ^~~~
/in/foo.cc:29:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else'
    printf("%d\n",num);
    ^~~~~~
/in/foo.cc:31:1: error: expected ';' before '}' token
 }
 ^