View Compilation Error

0_0_13280248_29681.cpp: In function 'int main()':
0_0_13280248_29681.cpp:5:2: error: '_int64' was not declared in this scope
  _int64 c[100]={1,1,2};
  ^
0_0_13280248_29681.cpp:8:3: error: 'c' was not declared in this scope
   c[i]=c[i-1]+c[i-2];
   ^
0_0_13280248_29681.cpp:12:21: error: 'c' was not declared in this scope
    printf("%I64d\n",c[b-a]);
                     ^