Compilare: user.cpp: In function ‘int main()’: user.cpp:84:20: warning: unused variable ‘x’ [-Wunused-variable] int n, x, y, z, i, j, m, maxcif=0; ^ user.cpp:84:23: warning: unused variable ‘y’ [-Wunused-variable] int n, x, y, z, i, j, m, maxcif=0; ^ user.cpp:84:26: warning: unused variable ‘z’ [-Wunused-variable] int n, x, y, z, i, j, m, maxcif=0; ^ user.cpp: In function ‘int cif_i(int, int)’: user.cpp:27:9: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:85:44: 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:86:46: 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:87:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:91:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&sol[i]); ^