Compilare: user.cpp: In function 'int main()': user.cpp:69: warning: format '%s' expects type 'char*', but argument 2 has type 'char (*)[17]' user.cpp: In function 'int qsort(int, int)': user.cpp:61: warning: control reaches end of non-void function user.cpp: In function 'int qsort2(int, int)': user.cpp:33: warning: control reaches end of non-void function