View Compilation Error

0_0_31384445_15745.cpp: In function 'int main()':
0_0_31384445_15745.cpp:8:5: error: 'X' was not declared in this scope
  if(X>=Y){
     ^
0_0_31384445_15745.cpp:8:8: error: 'Y' was not declared in this scope
  if(X>=Y){
        ^