Compilare: user.cpp: In function ‘int main()’: user.cpp:9:20: warning: unused variable ‘inc’ [-Wunused-variable] int n,k,i,d,ok,inc,x,prm,sf; ^ user.cpp:9:30: warning: unused variable ‘sf’ [-Wunused-variable] int n,k,i,d,ok,inc,x,prm,sf; ^ user.cpp:10:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&n,&k); ^ user.cpp:13:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&x); ^