Compilare: user.c: In function ‘main’: user.c:9: warning: format ‘%ld’ expects type ‘long int’, but argument 3 has type ‘long int *’ user.c:9: warning: format ‘%ld’ expects type ‘long int’, but argument 4 has type ‘long int *’ user.c:10: warning: format ‘%ld’ expects type ‘long int’, but argument 3 has type ‘long int *’ user.c:10: warning: format ‘%c’ expects type ‘int’, but argument 4 has type ‘char *’