Compilare: user.cpp: In function ‘int main()’: user.cpp:27:17: warning: unused variable ‘val’ [-Wunused-variable] int n,i,j,sol=0,val,aux; ^ user.cpp:28:29: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sort.in","r",stdin); ^ user.cpp:29:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sort.out","w",stdout); ^ user.cpp:30:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:33:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&ini[i]); ^