View Compilation Error

0_0_15451051_24578.cpp:2:11: error: '::main' must return 'int'
 void main()
           ^
0_0_15451051_24578.cpp: In function 'int main()':
0_0_15451051_24578.cpp:6:8: error: 'i' was not declared in this scope
    for(i=4;i<n;i++)
        ^
0_0_15451051_24578.cpp:10:20: error: 'i' was not declared in this scope
    printf("%d\n",a[i]);
                    ^