Thread: Compiler at fault??

This has worked for me in the past; but, might not be standard.

Code:

printf(buf);

Try this

Code:

printf("%s", buf);

You need to check that buf is NOT NULL; in case the alloc function failed.

Tim S.

I don't think it's the printf's fault. For the sake of clarity I will just paste the whole code, because I think the problem could be quite hidden in with all the pointers and what not. So here is the whole code:

Code:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

const int size_of_token = 30;


char* ZeroString(char *str, int size)
{
	int i;

	for (i = 0; i < size; i++)
	{
		str[i] = 0;
	}

	return str;
}

int main(int argc, char *argv[])
{
	FILE *f;
	char *buf;
	char filename[] = "test.txt";
	int size = 0, len = 0;
	int i = 0, j = 0, k = 0;
	char **token = NULL;
	char *tmp_token = calloc(size_of_token, sizeof(char));

	f = fopen(filename, "r");
	if (f == NULL)
	{
		printf("Error opening file %s\n", filename);
		return -1;
	}
	fseek(f, 0, SEEK_END);
	size = ftell(f);
	rewind(f);

	buf = calloc(size + 1, sizeof(char));

	while (fgets(&buf[strlen(buf)], size, f) != NULL)
		;

	fclose(f);

	len = strlen(buf);

	token = calloc(len / 2, sizeof(char *));
	for (i = 0; i < len/2; i++)
		token[i] = calloc(size_of_token, sizeof(char));

	for (i = 0; i < len; i++)
	{
		if (buf[i] != ' ' && buf[i] != '\n' && buf[i] != '\t')
			tmp_token[j++] = buf[i];
		else if (tmp_token[0] != 0)
		{
			j = 0;
			strcpy(token[k++], tmp_token);
			ZeroString(tmp_token, size_of_token);

		}
	}
	strcpy(token[k++], tmp_token);

	f = fopen("token.txt", "w");
	
	//printf("", &buf);

    ZeroString(buf, strlen(buf)+1);
	for (i = 0; i < k; i++)
	{
		strcpy(&buf[strlen(buf)], token[i]);
		strcpy(&buf[strlen(buf)], "\n");
	}

	printf("%s", buf);
	fputs(buf, f);

	fclose(f);

	return 0;
}

Hmmm, I think it has something to do with the two lines:

Code:

		strcpy(&buf[strlen(buf)], token[i]);
		strcpy(&buf[strlen(buf)], "\n");

more specifically the

Code:

strlen(buf)

function, because if I replace those two functions with the

Code:

strcat

it works, fine. So therefore I would assume that the

Code:

strlen

function is misbehaving.

Odd:

Code:

    ZeroString(buf, strlen(buf)+1);
	printf("%d\n", strlen(buf));

this prints out

Code:

1059

Is there something wrong with the

Code:

ZeroString

function I wrote??

Ooo dear am I confused.

I have come to the conclusion that the IDE was acting up, because when I copy->pasted the exact same source code in a new project in the same IDE (Pelles C) it worked. So I can only conclude that IDE got a bit crazy on me. I guess this topic is solved.

Thank you all, and have a nice day.

Bye.