Compilare: user.cpp:40:3: warning: no newline at end of file user.cpp: In function 'void qsort(long int, long int)': user.cpp:15: warning: comparison between signed and unsigned integer expressions user.cpp:16: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int main()': user.cpp:34: warning: comparison between signed and unsigned integer expressions user.cpp:35: warning: format '%ld' expects type 'long int*', but argument 2 has type 'unsigned int*' user.cpp:37: warning: comparison between signed and unsigned integer expressions user.cpp:38: warning: format '%ld' expects type 'long int', but argument 2 has type 'unsigned int'