foo.cc: In function 'int main()':
foo.cc:20:3: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   20 |   if(c==2)
      |   ^~
foo.cc:22:4: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   22 |    cnt==0;
      |    ^~~
foo.cc:22:7: warning: statement has no effect [-Wunused-value]
   22 |    cnt==0;
      |    ~~~^~~

[Hydro](https://hydro.ac)提供评测服务