Compilare: user.c: In function ‘main’: user.c:15:15: warning: unused variable ‘ch2’ [-Wunused-variable] char ch1, ch2; ^ user.c:15:10: warning: unused variable ‘ch1’ [-Wunused-variable] char ch1, ch2; ^ user.c:14:35: warning: unused variable ‘ok’ [-Wunused-variable] int ver, i, l, poz, co, maxi, ok; ^ user.c:14:25: warning: unused variable ‘co’ [-Wunused-variable] int ver, i, l, poz, co, maxi, ok; ^ user.c:19:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d\n", &ver ); ^ user.c:21:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%s", v ); ^