Compilare: user.cpp: In function ‘int main()’: user.cpp:14:10: warning: unused variable ‘l’ [-Wunused-variable] int i,l,n,poz,m,con,nr1,nr2; ^ user.cpp:18:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d " ,&n); ^ user.cpp:35:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d " ,&m); ^