Compilare: user.cpp: In function ‘int main()’: user.cpp:38:9: warning: unused variable ‘aux’ [-Wunused-variable] int aux; ^ user.cpp:42:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d", &n, &ka); ^ user.cpp:46:52: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d%d", &li[i], &pi[i], &si[i]); ^