Compilare: user.cpp: In function ‘int caut(int)’: user.cpp:48:9: warning: unused variable ‘a’ [-Wunused-variable] int a=0,i,step=lo; ^ user.cpp: In function ‘int cbin(int)’: user.cpp:65:13: warning: statement has no effect [-Wunused-value] for(step;step<N;step<<=1); ^ user.cpp:67:10: warning: statement has no effect [-Wunused-value] for(i;step;step>>=1) ^ user.cpp: In function ‘int main()’: user.cpp:83:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,m,p,q,a,nod,b,mi=1000000; ^ user.cpp:83:15: warning: unused variable ‘p’ [-Wunused-variable] int i,j,m,p,q,a,nod,b,mi=1000000; ^ user.cpp:83:27: warning: unused variable ‘mi’ [-Wunused-variable] int i,j,m,p,q,a,nod,b,mi=1000000; ^ user.cpp:80:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] {freopen("eliminare.in","r",stdin); ^ user.cpp:81:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("eliminare.out","w",stdout); ^ user.cpp:84:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:89:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&a); ^ user.cpp:103:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&b); ^