CODEWITHSUNDEEP
cconstantsc89
Quixotic
Quixotic

Reputation: 2464

Trying to assign new value to a constant

This is extracted from my module:

When trying to assign a new value to a constant after it's initialization the compiler issues (only) a warning message.

This is not correct in C99 but my module seem to be based on C89 could somebody confirm the validity of this statement as per C89.

Upvotes: 0

Views: 225

Answers (2)

ismail
ismail

Reputation: 47602

C89 and C99 seems to both generate an error for this case which looks correct, using code in http://ideone.com/x8lXL ;

# C89
[~]> gcc -std=c89 test.c
test.c: In function ‘main’:
test.c:5: error: assignment of read-only variable ‘A’

# C99
[~]> gcc -std=c99 test.c
test.c: In function ‘main’:
test.c:5: error: assignment of read-only variable ‘A’

Also note that clang agrees to gcchere.

Upvotes: 2

Vikram.exe
Vikram.exe

Reputation: 4585

I just checked the major differences in C99 from C89 and there is nothing mentioned about changes in 'const' keyword.

[off-topic] However, I am not getting the whole C89 standard drafts. Any one know from where I can download it?

Upvotes: 0

Related Questions