Compilare: user.cpp: In function ‘void sor(int, int)’: user.cpp:9:9: warning: variable ‘in’ set but not used [-Wunused-but-set-variable] int in,po,x,i,t,i1,i2; ^ user.cpp: In function ‘int main()’: user.cpp:56:13: warning: unused variable ‘j’ [-Wunused-variable] int n,i,j; ^ user.cpp:54:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("algsort.in","r",stdin); ^ user.cpp:55:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("algsort.out","w",stdout); ^ user.cpp:57:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:59:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i]); ^