dim delta,a,b,c,y,z,xo as single
Console.WriteLine("Valeur de a")
console.WriteLine("Valeur de b")
console.WriteLine("Valeur de c")
console.writeline("delta="& delta)
console.WriteLine("x1 ="& y)
console.Writeline("x2 ="& z)
console.writeline("X0 ="& xo)
Console.WriteLine("IMPOSSIBLE")