var a = prompt("value 1")
var b = prompt("value 2")
var c = prompt("value 3")
var d = prompt("value 4")
var e = prompt("value 5")
switch (true) {
case (a >= b && a >= c && a >= d && a >= e):
console.log(a + " this is greater value");
break;
case (b >= a && b >= c && b >= d && b >= e):
console.log(b + " this is greater value");
break;
case (c >= a && c >= b && c >= d && c >= e):
console.log(c + " this is greater value");
break;
case (d >= a && d >= b && d >= c && d >= e):
console.log(d + " this is greater value");
break;
case (e >= a && e >= b && e >= c && e >= d):
console.log(e + " this is greater value");
break;
}