View Compilation Error

0_0_15642299_12675.cpp:2:1: error: '_int64' does not name a type
 _int64  std[55] = {0,1,2};
 ^
0_0_15642299_12675.cpp: In function 'int main()':
0_0_15642299_12675.cpp:9:6: error: expected primary-expression before '[' token
   std[i] = std[i - 1] + std[i - 2];
      ^
0_0_15642299_12675.cpp:9:15: error: expected primary-expression before '[' token
   std[i] = std[i - 1] + std[i - 2];
               ^
0_0_15642299_12675.cpp:9:28: error: expected primary-expression before '[' token
   std[i] = std[i - 1] + std[i - 2];
                            ^
0_0_15642299_12675.cpp:15:24: error: expected primary-expression before '[' token
   printf("%I64d\n", std[m - n]);
                        ^