Compilare: user.c: In function ‘main’: user.c:21:5: warning: format ‘%s’ expects argument of type ‘char *’, but argument 3 has type ‘char (*)[10000]’ [-Wformat=] fscanf(f,"%s", &n); ^ user.c:13:7: warning: unused variable ‘sum20’ [-Wunused-variable] int sum20 = 4; ^ user.c:10:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d\n", &t); ^ user.c:21:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%s", &n); ^