View Compilation Error

0_0_29861596_14241.cpp:13:17: error: 'a' was not declared in this scope
 bool bmp(clock &a,clock &b)
                 ^
0_0_29861596_14241.cpp:13:26: error: 'b' was not declared in this scope
 bool bmp(clock &a,clock &b)
                          ^
0_0_29861596_14241.cpp:13:27: error: expression list treated as compound expression in initializer [-fpermissive]
 bool bmp(clock &a,clock &b)
                           ^
0_0_29861596_14241.cpp:14:1: error: expected ',' or ';' before '{' token
 {
 ^