View Compilation Error

134893_0_27644.cpp: In function `int main()':
134893_0_27644.cpp:8: error: `A' undeclared (first use this function)
134893_0_27644.cpp:8: error: (Each undeclared identifier is reported only once for each function it appears in.)
134893_0_27644.cpp:10: error: `B' undeclared (first use this function)
134893_0_27644.cpp:12: error: `C' undeclared (first use this function)
134893_0_27644.cpp:14: error: `D' undeclared (first use this function)
134893_0_27644.cpp:16: error: `E' undeclared (first use this function)
134893_0_27644.cpp:18: error: `score' undeclared (first use this function)
134893_0_27644.cpp:18: error: expected `;' before "is"