C programming [solved]

[Qchem]

Hi guys,

 

I'm trying to learn C from K&R and I'm having trouble with Exercise 1-18.

 

#include <stdio.h>
#define MAXLINE 1000 /* max line length */

int getline(char s[], int maxline);
void remspac(char t[], int len);

/* Remove trailing whitespace from lines & remove blank lines */
main()
{
 int len; /* line length */
 char line[MAXLINE];

 while ((len = getline(line, MAXLINE)) > 0)
;
 remspac(line, len);

 return 0;
}

/* getline: reads a line into s, and returns the length (i) */
int getline(char s[], int lim)
{
 int i, c;
 for (i = 0; i < lim - 1 && (c=getchar()) != EOF && c!='\n'; ++i)
   s[i] = c;
 if (c == '\n') {
   s[i] = c;
   ++i;
 }
 s[i] = '\0';
 if (s[i-2] == ' ')
   printf("Trailing space\n");

 return i;
}

void remspac(char t[], int len)
{
   printf("%s", t);
}

 

The problem is that my character array "line" does not seem to be passed to the function remspac correctly - remspac (which will do more later) doesn't print anything!! Anyone any ideas what I'm doing wrong? I know pointers are an important concept in C, but they haven't been covered in the book so far so I don't want to use them.

 

Thanks in advance,

 

Grant

[Qchem]

Gah, found my dumb mistake!!

 

Theres a null operator right after the while loop that calls getline, it shouldn't be there!

[xxbeanxx]

don't ya love finding your mistakes only after posting to a forum? :)

 

happens to me all the time.

[Cannonfodder]

Oh dude! Almost time for pointers! :lol: