[awfa3]

I'm getting an error I think is a segmentation fault in the code.

void saveData(FILE *profile, int *data) {
	int i;
	for (i = 0; i < 11; ++i) {
		fputs(*(data + i) + '0',profile);
		fputs("\n", profile);
	}
}

Also this warning: passing arg 1 of `fputs' makes pointer from integer without a cast : on the line that says fputs(*(data + i) + '0',profile);

Arguments passed to this function are the file pointer of profile set to "w", and the pointer to the beginning of an array of integers going up to 10 (11 Elements total starting from 0)

Running the program results in a crash when the code reaches this point.

Hopefully, this will be clearer than my other posts

[janotte]

Tell us what you think this line does

fputs(*(data + i) + '0',profile);

[awfa3]

janotte, on 21 Dec, 2009 - 04:19 PM, said:

Tell us what you think this line does

fputs(*(data + i) + '0',profile);

I think it takes data[i], adds it with '0' so its in ascii, and shoves it in profile. Also changing it to fputs(data[i] + '0',profile); makes no difference. Although it looks better

[janotte]

And "data" is a pointer to a character array?

I'm confused by the title of your posting versus its contents.

EDIT = Correct my language

This post has been edited by janotte: 21 December 2009 - 05:36 PM

[awfa3]

Data is a pointer to the beginning of an integer array.

[janotte]

Good.
I'm still not sure what you are trying to achieve.

So if data[0] holds 82 and data[1] holds 49 what would you expect to have written to the file?

[awfa3]

Well the file already contains this:
0
0
0
0
0
0
0
0
0
0
0

So I'm just overwriting it. If data holds what you says the result would be after writing:
82
49
0
0
0
0
0
0
0
0
0

And that's what I expect to achieve

[janotte]

And the reason you are using fputs()
http://www.cplusplus...y/cstdio/fputs/
instead of fputc()?
http://www.cplusplus...y/cstdio/fputc/

Sorry your design is passing me right by.
Could well say more about me than you.

[awfa3]

Well, I tried it, it compiled normally, but there are is an error, how do I manage multi-digit integers using fputc? (10, 100, 1000)

[janotte]

Sorry I am still not getting what you are up to.

Are you able to supply me a little driver program to compile with your function so I can see it working and maybe grasp your design a bit better.

Alternatively could someone who knows a lot more C than me and can see what the intent is here come in here now, please.

[JackOfAllTrades]

#include <stdio.h>

void saveData(FILE *profile, int *data, const int len)
{
    int i = 0;
    for (; i < len; ++i)
        fprintf(profile, "%d\n", data[i]);
}

int main()
{
    int myInts[] = { 1, 167, 257, 984, 1032, 1894, 24002 };

    FILE *fp = fopen("mydata.txt", "w");
    if (fp)
    {
        saveData(fp, myInts, sizeof(myInts)/sizeof(myInts[0]));
        fclose (fp);
    }
    return 0;
}

???

Output:

1
167
257
984
1032
1894
24002

[awfa3]

Thanks a lot It works

[janotte]

awfa3, on 21 Dec, 2009 - 06:05 PM, said:

Thanks a lot It works

So you weren't setting yourself the challenge of using a "put" variant?

I am so stupid making assumptions (and close to impossible ones at that).

[vvv2]

janotte, on 21 Dec, 2009 - 06:09 PM, said:

So you weren't setting yourself the challenge of using a "put" variant?

put() write data in the binary format,
this is more fast, but can't to be show in ascii...