Compilare: user.cpp: In function ‘void quicksort(char**, int, int, int)’: user.cpp:30:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (pos[c] < pos[midChar]) ^ user.cpp:30:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (pos[c] < pos[midChar]) ^ user.cpp:36:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] else if (pos[c] > pos[midChar]) ^ user.cpp:36:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] else if (pos[c] > pos[midChar]) ^ user.cpp: In function ‘int main()’: user.cpp:66:25: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[6]’ [-Wformat=] scanf("%s\n", &s); ^ user.cpp:73:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] pos[ sir[i] ] = i; ^ 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("zimeria.in", "r", stdin); ^ user.cpp:56:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("zimeria.out", "w", stdout); ^ user.cpp:58:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &p); ^ user.cpp:59:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &N); ^ user.cpp:60:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s\n", sir); ^ user.cpp:66:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s\n", &s); ^