foo.cc: In function ‘int main()’:
foo.cc:16:37: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   16 |                                 if(x=y&&x>z)
      |                                    ~^~~~~~~
foo.cc:19:45: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   19 |                                         if(x=y&&x<z)
      |                                            ~^~~~~~~
foo.cc:21:14: error: expected ‘}’ at end of input
   21 |     return 0;
      |              ^
foo.cc:4:1: note: to match this ‘{’
    4 | {
      | ^