View Compilation Error

0_0_5020047_8942.cpp: In function `int main()':
0_0_5020047_8942.cpp:5: error: `please' undeclared (first use this function)
0_0_5020047_8942.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_5020047_8942.cpp:6: error: `$a' undeclared (first use this function)
0_0_5020047_8942.cpp:6: error: `$b' undeclared (first use this function)
0_0_5020047_8942.cpp:6: error: `$c' undeclared (first use this function)
0_0_5020047_8942.cpp:6: error: `$d' undeclared (first use this function)
0_0_5020047_8942.cpp:7: error: expected `)' before ';' token