Compilare: user.c: In function ‘main’: user.c:10: warning: format ‘%hd’ expects type ‘short int *’, but argument 2 has type ‘char *’ user.c:10: warning: format ‘%hd’ expects type ‘short int *’, but argument 3 has type ‘char *’ user.c:14: warning: array subscript has type ‘char’ user.c:17: warning: array subscript has type ‘char’ user.c:17: warning: array subscript has type ‘char’ user.c:17: warning: array subscript has type ‘char’ user.c:17: warning: array subscript has type ‘char’ user.c:18: warning: array subscript has type ‘char’ user.c:18: warning: array subscript has type ‘char’ user.c:8: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:9: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c:13: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result