View Compilation Error

0_0_18067605_4114.cpp: In function 'int main()':
0_0_18067605_4114.cpp:10:3: error: '_int64' was not declared in this scope
   _int64 f[1000]={1,1};
   ^
0_0_18067605_4114.cpp:12:4: error: 'f' was not declared in this scope
    f[i]=f[i-1]+f[i-2];
    ^
0_0_18067605_4114.cpp:16:21: error: 'f' was not declared in this scope
    printf("%I64d\n",f[i]);
                     ^