Compilare: user.cpp: In function ‘int main()’: user.cpp:42:15: warning: unused variable ‘p’ [-Wunused-variable] int i,j,n,p,u,m,val,cnt=0,nr,k,ok; ^ user.cpp:42:17: warning: unused variable ‘u’ [-Wunused-variable] int i,j,n,p,u,m,val,cnt=0,nr,k,ok; ^ user.cpp:42:19: warning: unused variable ‘m’ [-Wunused-variable] int i,j,n,p,u,m,val,cnt=0,nr,k,ok; ^ user.cpp:42:21: warning: unused variable ‘val’ [-Wunused-variable] int i,j,n,p,u,m,val,cnt=0,nr,k,ok; ^ user.cpp:42:31: warning: unused variable ‘nr’ [-Wunused-variable] int i,j,n,p,u,m,val,cnt=0,nr,k,ok; ^ user.cpp:44:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ user.cpp:47:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&v[i]); ^