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warning: comparison between pointer and integer

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# 1  
Old 10-16-2011
warning: comparison between pointer and integer
Hi guys Smilie

I am still playing with my C handbook and yes, as you can see I have small problem as always Smilie

Quote:
Teksbook says
Write a program that reverses the words in sentence.
Use a loop to read charactes one by one and store them in
one-dimensioal char array. Have the loop stop at a period,
question mark or exclamantion point and store it in separate
char varible. Then use a second loop to search backward through the array for the begging og the last word. Print the last word then search backward for the next-to-lat word. Repeat until beginning of the array is reached. Finnaly print the termination character.
I wrote a C code
[C] #include <stdio.h> #define MESSAGE 100 int main(void) { char input_mes - Pastebin.com

And when I try to compile it I get following errors from gcc

Code:
14.c: In function ‘main':
14.c:33: warning: comparison between pointer and integer
14.c:35: warning: comparison between pointer and integer

I removed comments so code be more nice.

And this isn't my homework, it is a self-learnig so if this is a wrong place to put question please move it where belongs.

Thanks for reading Smilie
# 2  
Old 10-16-2011
You've got double quotes when you need single quotes:


Code:
(input_message[output] == " ")

The " " is a pointer to a string (of a single blank) while input_message[output] is a single character (converted to int for comparison).


Also, the statement input_message != " " won't ever evaluate to true, as you're comparing two pointers and not what the pointers reference. Have a look at strcmp() and strncmp() functions which I think will do what you want in this situation.


There may be other issues; I didn't look all that closely.
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