/in/foo.cc: In function 'int main()':
/in/foo.cc:7:12: error: 'x' was not declared in this scope
    7 |         if(x<=y&&y<=z&&x<=z)
      |            ^
/in/foo.cc:7:15: error: 'y' was not declared in this scope
    7 |         if(x<=y&&y<=z&&x<=z)
      |               ^
/in/foo.cc:7:21: error: 'z' was not declared in this scope
    7 |         if(x<=y&&y<=z&&x<=z)
      |                     ^