View Compilation Error

0_0_30572154_4391.cpp: In function 'int main()':
0_0_30572154_4391.cpp:40:25: error: 'a' was not declared in this scope
                 else if(a[i]<aim)
                         ^
0_0_30572154_4391.cpp:40:30: error: 'aim' was not declared in this scope
                 else if(a[i]<aim)
                              ^