Compilare: user.c: In function 'readf': user.c:30: warning: format '%ld' expects type 'long int *', but argument 3 has type 'int *' user.c:30: warning: format '%ld' expects type 'long int *', but argument 4 has type 'int *' user.c: In function 'main': user.c:177: warning: passing argument 1 of 'readf' from incompatible pointer type user.c:177: warning: passing argument 2 of 'readf' from incompatible pointer type