Question

1.) Assume c is a char variable. What value does c hold after the following statement executes? (Type the answer without quotes.)

c = toupper('a');___________

2.) Assume c is a char variable. What value does c hold after the following statement executes? (Type the answer without quotes.)

c = toupper('B');___________

3.) Assume c is a char variable. What value does c hold after the following statement executes? (Type the answer without quotes.)

c = tolower('7');___________

Answer 1

Have you actually read the description of toupper?

Converts c to its uppercase equivalent if c is a lowercase letter and has an uppercase equivalent. If no such conversion is possible, the value returned is c unchanged.

So, what do you think are the correct answers?

Answer 2

Thanks Steve! Is that I don't have a book, can't afford it too expensive.
You made it clear...
A, b, 7

Answer 3

toupper('B')
is B a lower-case letter with an upper-case equivalent?
No. So, B is left unchanged. The answers are:

A,B,7

Answer 4

Ok... Thanks!

Answer 5

You obviously have a computer. Just do a web search for "c++ toupper" and you can find documentation online.

If you are studying C++, you must surely have some kind of course materials.

These days there is a huge wealth of documentation online. Make us of it and life will be easier.