Compilare: user.cpp: In function ‘int main()’: user.cpp:9:17: warning: unused variable ‘cp’ [-Wunused-variable] int n,i,x,s,cp,j=0,k=0,aux,aux2,aux3; ^ user.cpp:9:24: warning: unused variable ‘k’ [-Wunused-variable] int n,i,x,s,cp,j=0,k=0,aux,aux2,aux3; ^ user.cpp:7:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sirsort.in","r",stdin); ^ user.cpp:8:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sirsort.out","w",stdout); ^ user.cpp:10:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:12:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i]); ^