View Compilation Error

0_0_36693813_2850.cpp: In function 'void fre()':
0_0_36693813_2850.cpp:34:1: error: a function-definition is not allowed here before '{' token
 {
 ^
0_0_36693813_2850.cpp: In member function 'int fre()::Line::segXseg(fre()::Line)':
0_0_36693813_2850.cpp:74:27: error: 'sgn' was not declared in this scope
 int d1 = sgn((e-s)^(v.s-s));
                           ^
0_0_36693813_2850.cpp: In function 'void fre()':
0_0_36693813_2850.cpp:90:1: error: a function-definition is not allowed here before '{' token
 {
 ^
0_0_36693813_2850.cpp:128:1: error: expected '}' at end of input
 }
 ^