Compilare: user.cpp: In function 'int main()': user.cpp:54: warning: 'xj' may be used uninitialized in this function user.cpp:54: warning: 'yr' may be used uninitialized in this function user.cpp:54: warning: 'xr' may be used uninitialized in this function user.cpp:54: warning: 'yj' may be used uninitialized in this function user.cpp:105: warning: 'yyy' may be used uninitialized in this function user.cpp:105: warning: 'xxx' may be used uninitialized in this function /tmp/ccgdH6jI.o: In function `main': user.cpp:(.text+0x264): warning: the `gets' function is dangerous and should not be used.