Compilare: user.cpp: In function ‘int main()’: user.cpp:6:24: warning: unused variable ‘q’ [-Wunused-variable] {int A,B,n,a[100020],i,q,dd=0,j,cp; ^ user.cpp:11:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&n,&A,&B); ^ user.cpp:13:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] {fscanf(f,"%d",&a[i]); ^