How do I compare a charecter from a file with another character?

[Jonathan]

I've tried:

char ch;
ifstream fin("today.txt"); // open input file
while (fin.get(ch)) {
if (ch == "z")
cout << ch;}
fin.close();

but get the error

ISO C++ forbids comparison between pointer and integer

How do I work around this issue?

Thanks,
Jonathan

 

[puzzlecracker]

watch out for 'z' in if (ch == 'z')

 

[Victor Bazarov]

I've tried:

char ch;
ifstream fin("today.txt"); // open input file
while (fin.get(ch)) {
if (ch == "z")

If you want to compare a character with a character, you need to
use

if (ch == 'z')

"z" is a _string_literal_ and not a _character_.

cout << ch;}
fin.close();

but get the error

ISO C++ forbids comparison between pointer and integer

How do I work around this issue?

By reading the right books. What book are you reading that doesn't
explain the difference between 'z' and "z"?

V

 

[Mike Wahler]

I've tried:

char ch;
ifstream fin("today.txt"); // open input file
while (fin.get(ch)) {
if (ch == "z")
cout << ch;}
fin.close();

but get the error

ISO C++ forbids comparison between pointer and integer

How do I work around this issue?

Compare with a character.

if(ch == 'z')

-Mike

 

[Jonathan]

watch out for 'z' in if (ch == 'z')

Thank you very much. That took care of the problem.