View Compilation Error

110449_0_18935.cpp:3: error: `_int64' does not name a type
110449_0_18935.cpp: In function `int main()':
110449_0_18935.cpp:23: error: `recursion' undeclared (first use this function)
110449_0_18935.cpp:23: error: (Each undeclared identifier is reported only once for each function it appears in.)