1870: Print the Maximum of Integers for 4 types

There are four types for integers,byte,short,int,long;every type has different sizes,for example,byte is 8-bit,so its maximum value is 127.

the problem is to output the maximum of four types according to the order(byte,short,int,long)

you can do it in two steps:

1)first,you should define four variables named a,b,c,d,then assign the corresponding maximum to them. 

for instance, byte a=127

2)output them according to the sample

you can refer to Table 2.1 in the page 45 of your textbook

note I will check your code!