Compilare: user.cpp: In function ‘int main()’: user.cpp:7:13: warning: unused variable ‘nr1’ [-Wunused-variable] int n,i,aux,nr1,nr2,k,j=0; ^ user.cpp:7:17: warning: unused variable ‘nr2’ [-Wunused-variable] int n,i,aux,nr1,nr2,k,j=0; ^ user.cpp:7:21: warning: unused variable ‘k’ [-Wunused-variable] int n,i,aux,nr1,nr2,k,j=0; ^ user.cpp:5:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("aranjare2.in","r",stdin); ^ user.cpp:6:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("aranjare2.out","w",stdout); ^ user.cpp:8:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:10:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i]); ^