View Compilation Error

0_0_12680010_23084.cpp:2:10: #include expects "FILENAME" or <FILENAME>
0_0_12680010_23084.cpp: In function `int main()':
0_0_12680010_23084.cpp:5: error: `z' undeclared (first use this function)
0_0_12680010_23084.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_12680010_23084.cpp:10: error: `a' undeclared (first use this function)