View Compilation Error

0_0_8594663_7513.cpp: In function `int main()':
0_0_8594663_7513.cpp:6: error: expected primary-expression before "long"
0_0_8594663_7513.cpp:6: error: expected `;' before "long"
0_0_8594663_7513.cpp:11: error: `a' undeclared (first use this function)
0_0_8594663_7513.cpp:11: error: (Each undeclared identifier is reported only once for each function it appears in.)