kbiti.cpp: In function `void BK(int)': kbiti.cpp:30: `valid' undeclared (first use this function) kbiti.cpp:30: (Each undeclared identifier is reported only once for each function it appears in.) kbiti.cpp:31: `solutie' undeclared (first use this function) kbiti.cpp:31: `rezolvare' undeclared (first use this function) kbiti.cpp: In function `int valid(int)': kbiti.cpp:66: `int valid(int)' used prior to declaration kbiti.cpp: In function `int solutie(int)': kbiti.cpp:73: `int solutie(int)' used prior to declaration kbiti.cpp: In function `void afisare(int)': kbiti.cpp:80: `cout' undeclared (first use this function) kbiti.cpp:82: parse error at end of input