make a program that will input 6 numbers and output the highest number and the lowest number
input n
max=min=n
for i=2..6
read n
if n>max then max=n
if n<min then min=n
next i
print max,min
max=min=n
for i=2..6
read n
if n>max then max=n
if n<min then min=n
next i
print max,min