foo.cc: In function ‘int main()’:
foo.cc:47:22: warning: ‘x’ may be used uninitialized [-Wmaybe-uninitialized]
   47 |         cout << x << " " << y << " " << z<<endl;
      |                      ^~~
foo.cc:4:22: note: ‘x’ was declared here
    4 |         int a, b, c ,x ,y , z ;
      |                      ^
foo.cc:47:34: warning: ‘y’ may be used uninitialized [-Wmaybe-uninitialized]
   47 |         cout << x << " " << y << " " << z<<endl;
      |                                  ^~~
foo.cc:4:25: note: ‘y’ was declared here
    4 |         int a, b, c ,x ,y , z ;
      |                         ^
foo.cc:47:41: warning: ‘z’ may be used uninitialized [-Wmaybe-uninitialized]
   47 |         cout << x << " " << y << " " << z<<endl;
      |                                         ^
foo.cc:4:29: note: ‘z’ was declared here
    4 |         int a, b, c ,x ,y , z ;
      |                             ^