View Compilation Error

0_0_1460662_4503.cpp: In function `int main()':
0_0_1460662_4503.cpp:12: error: `y' undeclared (first use this function)
0_0_1460662_4503.cpp:12: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1460662_4503.cpp:12: error: `x' undeclared (first use this function)
0_0_1460662_4503.cpp:12: error: expected primary-expression before ';' token
0_0_1460662_4503.cpp:13: error: `i' undeclared (first use this function)