View Compilation Error

1057813_0_0_24534.cpp:81: error: expected unqualified-id before '--' token
1057813_0_0_24534.cpp:81: error: expected `,' or `;' before '--' token
1057813_0_0_24534.cpp: In function `int main(int, char**)':
1057813_0_0_24534.cpp:145: error: declaration of C function `int main(int, char**)' conflicts with
1057813_0_0_24534.cpp:15: error: previous declaration `int main()' here
1057813_0_0_24534.cpp: In function `int main(int, char**)':
1057813_0_0_24534.cpp:187: error: `isoperator' undeclared (first use this function)
1057813_0_0_24534.cpp:187: error: (Each undeclared identifier is reported only once for each function it appears in.)