View Compilation Error

0_0_3014077_13392.cpp: In function `int main()':
0_0_3014077_13392.cpp:9: error: `h' undeclared (first use this function)
0_0_3014077_13392.cpp:9: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_3014077_13392.cpp:9: error: `p' undeclared (first use this function)
0_0_3014077_13392.cpp:9: error: `y' undeclared (first use this function)
0_0_3014077_13392.cpp:10: error: no match for 'operator<<' in 'std::cin << a[100]'