Compilare: user.cpp: In function ‘void Calcul(long long unsigned int&, int, int)’: user.cpp:10:7: warning: unused variable ‘y’ [-Wunused-variable] { int y=1;int o;long long s=1; ^ user.cpp: In function ‘int main()’: user.cpp:57:36: warning: format ‘%ld’ expects argument of type ‘long int’, but argument 3 has type ‘int’ [-Wformat=] fprintf(g,"%ld\n",b[y]-b[x-1]); ^ user.cpp:37:23: warning: unused variable ‘s’ [-Wunused-variable] unsigned long long s; ^ user.cpp:39:21: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ user.cpp:56:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&x,&y); ^