Compilare: user.c: In function 'Makel': user.c:15: warning: format '%i' expects type 'int *', but argument 3 has type 'long int *' user.c:18: warning: implicit declaration of function 'malloc' user.c:18: warning: incompatible implicit declaration of built-in function 'malloc' user.c:24: warning: incompatible implicit declaration of built-in function 'malloc' user.c: In function 'main': user.c:76: warning: control reaches end of non-void function