Eroare de compilare: user.cpp:2: error: `u1' was not declared in this scope user.cpp: In function `long int partition2(long int, long int)': user.cpp:32: error: `sir1' undeclared (first use this function) user.cpp:32: error: (Each undeclared identifier is reported only once for each function it appears in.) user.cpp: In function `int main()': user.cpp:62: warning: long int format, int arg (arg 2) user.cpp:110: warning: long int format, int arg (arg 2)