Compilare: user.cpp: In function ‘int main()’: user.cpp:50:23: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets (s,1600,fin); ^ user.cpp: In function ‘void schimba(int, int)’: user.cpp:27:9: warning: ‘k’ is used uninitialized in this function [-Wuninitialized] int k; ^ user.cpp: In function ‘void sortare()’: user.cpp:27:9: warning: ‘k’ may be used uninitialized in this function [-Wmaybe-uninitialized]