/in/foo.cc: In function 'int main()':
/in/foo.cc:11:16: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  if(a||b||c<=89&&a||b||c>=1)
           ~~~~~^~~
/in/foo.cc:13:16: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  if(a||b||c<=91&&a||b||c>=179);
           ~~~~~^~~
/in/foo.cc:13:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  if(a||b||c<=91&&a||b||c>=179);
  ^~
/in/foo.cc:14:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
   cout<<"dunjiao";
   ^~~~