foo.cc: In function 'int main()':
foo.cc:13:25: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   13 |                         if(x<=a&&x>=b)
      |                         ^~
foo.cc:19:33: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   19 |                                 if(c=='-')
      |                                 ^~
foo.cc:5:17: warning: unused variable 'd' [-Wunused-variable]
    5 |         int a,b,d,x=0,e;
      |                 ^
foo.cc:25:15: warning: 'e' may be used uninitialized in this function [-Wmaybe-uninitialized]
   25 |         cout<<e;
      |               ^

[Hydro](https://hydro.ac)提供评测服务