View Compilation Error

1_714_2039_26063.cpp: In function 'int main()':
1_714_2039_26063.cpp:23:26: error: 'num' was not declared in this scope
             scanf("%d", &num[i]);
                          ^
1_714_2039_26063.cpp:36:17: error: 'num' was not declared in this scope
             if (num[i] == lucky) {
                 ^