View Compilation Error

0_0_4924771_22716.cpp: In function `int main()':
0_0_4924771_22716.cpp:6: error: expected `;' before "a"
0_0_4924771_22716.cpp:7: error: `a' undeclared (first use this function)
0_0_4924771_22716.cpp:7: error: (Each undeclared identifier is reported only once for each function it appears in.)