Compilare: user.cpp: In function ‘int main()’: user.cpp:6:16: warning: unused variable ‘cb’ [-Wunused-variable] int m,f,a,b,d,cb,p,q,i,j,prod,k,s,nr,e,t; ^ user.cpp:6:19: warning: unused variable ‘p’ [-Wunused-variable] int m,f,a,b,d,cb,p,q,i,j,prod,k,s,nr,e,t; ^ user.cpp:6:32: warning: unused variable ‘k’ [-Wunused-variable] int m,f,a,b,d,cb,p,q,i,j,prod,k,s,nr,e,t; ^ user.cpp:7:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pinex.in","r",stdin); ^ user.cpp:8:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pinex.out","w",stdout); ^ user.cpp:9:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&m); ^ user.cpp:23:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&b); ^