View Compilation Error

0_0_13353438_30856.cpp: In function 'int main()':
0_0_13353438_30856.cpp:8:16: error: 'a' was not declared in this scope
    scanf("%d",&a[i]);
                ^
0_0_13353438_30856.cpp:12:7: error: 'a' was not declared in this scope
    if(a[i]%2==1)
       ^