View Compilation Error

0_0_1503650_26868.cpp: In function `int main()':
0_0_1503650_26868.cpp:9: error: `yes' undeclared (first use this function)
0_0_1503650_26868.cpp:9: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1503650_26868.cpp:10: error: `no' undeclared (first use this function)