Compilare: user.cpp: In function ‘int main()’: user.cpp:9:10: warning: unused variable ‘g’ [-Wunused-variable] *g=fopen("culori3.out", "w"); ^ user.cpp:24:15: warning: unused variable ‘s’ [-Wunused-variable] long long int s=0; ^ user.cpp:11:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &n); ^