View Compilation Error

0_0_27765803_9112.cpp: In function 'int main()':
0_0_27765803_9112.cpp:9:26: error: 'num' was not declared in this scope
             scanf("%lf",&num[i]);
                          ^
0_0_27765803_9112.cpp:10:13: error: 'num' was not declared in this scope
         max=num[1];
             ^