Compilare: user.c: In function ‘main’: user.c:29:27: warning: unused variable ‘cn’ [-Wunused-variable] unsigned long long n, cn; ^ user.c: In function ‘egalitate’: user.c:24:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.c: In function ‘main’: user.c:33:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%llu", &c, &n); ^