View Compilation Error

0_0_19978086_7326.cpp: In function 'int main()':
0_0_19978086_7326.cpp:4:2: error: '_int64' was not declared in this scope
  _int64 temp[50]={1,1,2};
  ^
0_0_19978086_7326.cpp:8:3: error: 'temp' was not declared in this scope
   temp[i]=temp[i-1]+temp[i-2];
   ^
0_0_19978086_7326.cpp:15:21: error: 'temp' was not declared in this scope
    printf("%I64d\n",temp[b-a]);
                     ^