Compilare: user.c: In function ‘main’: user.c:30: warning: format ‘%d’ expects type ‘int’, but argument 3 has type ‘long int’ user.c:30: warning: format ‘%d’ expects type ‘int’, but argument 4 has type ‘long int’ user.c:30: warning: format ‘%d’ expects type ‘int’, but argument 5 has type ‘long int’ user.c:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result