View Compilation Error

0_0_4954675_13262.cpp: In function `int main()':
0_0_4954675_13262.cpp:79: error: `line66n' undeclared (first use this function)
0_0_4954675_13262.cpp:79: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_4954675_13262.cpp:81: error: expected primary-expression before "else"
0_0_4954675_13262.cpp:81: error: expected `;' before "else"