Compilare: user.cpp: In function ‘int main()’: user.cpp:9:13: warning: unused variable ‘nr’ [-Wunused-variable] int n,i,nr,xx,li=1,lf=1,so=-999999999,si=0,lg=0,tot=0,poz; ^ user.cpp:9:53: warning: unused variable ‘tot’ [-Wunused-variable] int n,i,nr,xx,li=1,lf=1,so=-999999999,si=0,lg=0,tot=0,poz; ^ user.cpp:12:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ user.cpp:15:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&v[i],&xx); ^ user.cpp:37:10: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] lg=lf-poz+1; ^