Eroare de compilare: user.c:3:18: error: conio.h: No such file or directory user.c: In function 'main': user.c:78: warning: format '%i' expects type 'int', but argument 2 has type 'long unsigned int' user.c:79: warning: format '%i' expects type 'int', but argument 2 has type 'long unsigned int' user.c:98: warning: format '%i' expects type 'int', but argument 2 has type 'long unsigned int' user.c:120: warning: implicit declaration of function 'getch' user.c:32: warning: unused variable 'fout' user.c:28: warning: unused variable 'U2' user.c:121: warning: control reaches end of non-void function