Compilare: user.cpp: In function ‘int main()’: user.cpp:52:19: warning: ‘y2’ may be used uninitialized in this function [-Wmaybe-uninitialized] s2=s2-x1-x2-y1-y2; ^ user.cpp:52:16: warning: ‘y1’ may be used uninitialized in this function [-Wmaybe-uninitialized] s2=s2-x1-x2-y1-y2; ^ user.cpp:52:13: warning: ‘x2’ may be used uninitialized in this function [-Wmaybe-uninitialized] s2=s2-x1-x2-y1-y2; ^ user.cpp:52:10: warning: ‘x1’ may be used uninitialized in this function [-Wmaybe-uninitialized] s2=s2-x1-x2-y1-y2; ^ user.cpp:29:16: warning: ‘z3’ may be used uninitialized in this function [-Wmaybe-uninitialized] s1=s1-z1-z2-z3; ^ user.cpp:29:13: warning: ‘z2’ may be used uninitialized in this function [-Wmaybe-uninitialized] s1=s1-z1-z2-z3; ^ user.cpp:29:10: warning: ‘z1’ may be used uninitialized in this function [-Wmaybe-uninitialized] s1=s1-z1-z2-z3; ^