View Compilation Error

0_0_3003812_12147.cpp: In function `int main()':
0_0_3003812_12147.cpp:34: error: expected unqualified-id before "long"
0_0_3003812_12147.cpp:34: error: expected `,' or `;' before "long"
0_0_3003812_12147.cpp:37: error: `res' undeclared (first use this function)
0_0_3003812_12147.cpp:37: error: (Each undeclared identifier is reported only once for each function it appears in.)