Compilare: user.cpp: In function ‘int main()’: user.cpp:14:13: warning: unused variable ‘st’ [-Wunused-variable] int i,q,st,dr,mid,t; ^~ user.cpp:14:16: warning: unused variable ‘dr’ [-Wunused-variable] int i,q,st,dr,mid,t; ^~ user.cpp:14:19: warning: unused variable ‘mid’ [-Wunused-variable] int i,q,st,dr,mid,t; ^~~ user.cpp:21:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&q); ^ user.cpp:23:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%lld",&x); ^