foo.cc: In function ‘int main()’:
foo.cc:10:17: warning: suggest parentheses around arithmetic in operand of ‘^’ [-Wparentheses]
   10 |         if(m=x^2+y^2+z^2)
      |                ~^~
foo.cc:10:21: warning: suggest parentheses around arithmetic in operand of ‘^’ [-Wparentheses]
   10 |         if(m=x^2+y^2+z^2)
      |                    ~^~
foo.cc:10:13: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   10 |         if(m=x^2+y^2+z^2)
      |            ~^~~~~~~~~~~~