Compilare: main.c: In function 'main': main.c:40:9: warning: unused variable 'count' [-Wunused-variable] int count = 0; ^~~~~ main.c:39:9: warning: unused variable 'step' [-Wunused-variable] int step = b; ^~~~ main.c:36:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d %d %d", &n, &a, &b, &c); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~