Compilare: user.cpp: In function 'void swap(int, int)': user.cpp:14: warning: operation on 'i' may be undefined user.cpp: In function 'int main()': user.cpp:32: warning: use of 'll' length modifier with 'f' type character user.cpp:25: warning: 'at2' may be used uninitialized in this function user.cpp:25: warning: 'at1' may be used uninitialized in this function user.cpp:25: warning: 'as2' may be used uninitialized in this function user.cpp:25: warning: 'as1' may be used uninitialized in this function user.cpp:24: warning: 'd2' may be used uninitialized in this function user.cpp:24: warning: 'd1' may be used uninitialized in this function