I was working on notes on prefix/postfix evaluation and I came across Maha Anna way of evaluation of prefix/postfix from previous posts.
I can see how she does it, but the way its
word does not seem to be correct.
prefix/postix I am looking to clean up the wording and show my students this method (with appropriate credit)
Examples,
Given a= 10;
1. x= a++ + ++a; //x= 22
Given a = 2, b = 3, c =2
2. x= ++a - b++ + ++c //x = 3
To me, This is basically what she said:
1. for any i, subsitute the latest value of i
2. for ++symbol, increment the latest value
3. for -- symbol, decrement the latest value
4. finally do the calculation for all non brackted values
5. be careful when the assigned var is the same as the var which undergone all these ++/-- operations in the statement. In this case the assigned var takes its lastest value. (Which was corrected to say: Since the left hand side var happened to be the var i inteself it takes the value of calculated value.
So
1. 10(11) + (12)12 = 22
2. x= (3)3 - 3(4) + (3)3 = 3
Any help on cleaning up the English with this is helpful (Blindly is a bad word to use!!)
[ July 03, 2004: Message edited by: James Chegwidden ]