Compilare: user.cpp: In function 'void read()': user.cpp:17: warning: format '%ld' expects type 'long int*', but argument 3 has type 'uint*' user.cpp:18: warning: comparison between signed and unsigned integer expressions user.cpp:19: warning: format '%ld' expects type 'long int*', but argument 3 has type 'big*' user.cpp: In function 'void qsort(uint, uint)': user.cpp:23: warning: unused variable 'k' user.cpp: In function 'void show()': user.cpp:35: warning: comparison between signed and unsigned integer expressions user.cpp:36: warning: format '%ld' expects type 'long int', but argument 3 has type 'big'