Compilare: user.c: In function ‘main’: user.c:33: warning: format ‘%s’ expects type ‘char *’, but argument 2 has type ‘char (*)[154]’ user.c:29: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:30: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:31: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c:33: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result