Compilare: user.cpp: In function ‘int main()’: user.cpp:44:24: warning: ‘c2’ may be used uninitialized in this function [-Wmaybe-uninitialized] p.y = m2 * a.x + c2; ^ user.cpp:30:24: note: ‘c2’ was declared here double m1, m2, c1, c2; ^ user.cpp:52:22: warning: ‘m2’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (abs( m1 - m2 ) < eps) ^ user.cpp:30:16: note: ‘m2’ was declared here double m1, m2, c1, c2; ^ user.cpp:49:24: warning: ‘c1’ may be used uninitialized in this function [-Wmaybe-uninitialized] p.y = m1 * c.x + c1; ^ user.cpp:30:20: note: ‘c1’ was declared here double m1, m2, c1, c2; ^ user.cpp:52:22: warning: ‘m1’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (abs( m1 - m2 ) < eps) ^ user.cpp:30:12: note: ‘m1’ was declared here double m1, m2, c1, c2; ^