View Compilation Error

0_0_7127650_26549.cpp: In function `int main()':
0_0_7127650_26549.cpp:5: error: expected unqualified-id before "long"
0_0_7127650_26549.cpp:5: error: expected `,' or `;' before "long"
0_0_7127650_26549.cpp:10: error: `num' undeclared (first use this function)
0_0_7127650_26549.cpp:10: error: (Each undeclared identifier is reported only once for each function it appears in.)