Compilare: user.cpp: In function ‘void Read()’: user.cpp:132:13: warning: ‘d’ may be used uninitialized in this function [-Wmaybe-uninitialized] c-=d; ^ user.cpp:20:35: note: ‘d’ was declared here double x=0,tot=0,tot1=0,a,b,c,d; ^ user.cpp:151:29: warning: ‘a’ may be used uninitialized in this function [-Wmaybe-uninitialized] x1=-b/(2*a); ^ user.cpp:20:29: note: ‘a’ was declared here double x=0,tot=0,tot1=0,a,b,c,d; ^ user.cpp:140:23: warning: ‘b’ may be used uninitialized in this function [-Wmaybe-uninitialized] x2=(-b-sqrt(delta))/(2*a); ^ user.cpp:20:31: note: ‘b’ was declared here double x=0,tot=0,tot1=0,a,b,c,d; ^ user.cpp:132:13: warning: ‘c’ may be used uninitialized in this function [-Wmaybe-uninitialized] c-=d; ^ user.cpp:20:33: note: ‘c’ was declared here double x=0,tot=0,tot1=0,a,b,c,d; ^