Compilare: user.cpp: In function ‘int fact(int, int)’: user.cpp:6:20: warning: unused variable ‘put’ [-Wunused-variable] int cd=d,ras=0,put=1,cn=n; ^ user.cpp: In function ‘int main()’: user.cpp:24:9: warning: unused variable ‘n’ [-Wunused-variable] int n,i,j,d,r,facti,factj,ras=0,factdif; ^ user.cpp:24:13: warning: unused variable ‘j’ [-Wunused-variable] int n,i,j,d,r,facti,factj,ras=0,factdif; ^ user.cpp:25:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d",&r,&d); ^