View Compilation Error

0_0_2526454_19428.cpp:4: error: expected init-declarator before "long"
0_0_2526454_19428.cpp:4: error: expected `,' or `;' before "long"
0_0_2526454_19428.cpp: In function `int main()':
0_0_2526454_19428.cpp:68: error: `sum' undeclared (first use this function)
0_0_2526454_19428.cpp:68: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_2526454_19428.cpp:71: error: `ans' undeclared (first use this function)