/in/foo.cc: In function 'bool fun(int)':
/in/foo.cc:13:19: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
         if(a[0]=24)return true;
                   ^
/in/foo.cc: In function 'double jct(std::__cxx11::string)':
/in/foo.cc:46:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^