View Compilation Error

0_0_38304605_967.cpp: In function 'int main()':
0_0_38304605_967.cpp:32:24: error: 'x' was not declared in this scope
  while (scanf("%d%d", &x, &y) && n) {
                        ^
0_0_38304605_967.cpp:32:28: error: 'y' was not declared in this scope
  while (scanf("%d%d", &x, &y) && n) {
                            ^