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String-handling

Posted on 2000-04-13
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Last Modified: 2010-04-02
Hi!

How do I do this:

char str[] = "DSN=MYDSN\0" "DBQ=test.mbd";
If I have MYDSN and test.mbd in variables?
I can't do strcpy & strcat, because the string will be truncated at the null-character. If I don't have the \0 , the DBQ will not be added when I then use this str as the last parameter in SQLConfigDataSource()

Thanks!

 
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Question by:Scattan
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7 Comments
 
LVL 1

Expert Comment

by:mahno
ID: 2711679
Hi,

try this way:

char str[256];
char *var1 = "MYDSN";
char *var2 = "test.mbd";
int len;

strcpy(str, "DSN=");
strcat(str, var1); //
 
len = strlen(str); //save index
strcat(str, "\xff"); //insert temp character

strcat(str, "DBQ=");
strcat(str, var2);
str[len] = 0; // replace temp character with '\0'

Hope this helps,
  mahno
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LVL 3

Accepted Solution

by:
marcjb earned 25 total points
ID: 2711719
#include <stdio.h>
#include <string.h>

int main()
{
char str[256];
char var1[] = "DSN=MYDSN";
char var2[] = "DBQ=test.mbd";
strcpy(str, var1);
memcpy(str + strlen(str) + 1, var2, strlen(var2) + 1);
}

/* The plus 1's grab the NULL's */
0
 

Author Comment

by:Scattan
ID: 2711895
Hi mahno & marcjb!

Thanks for your answers.
They both worked very well, so I will asking community support to split the points between you two.
Thanks!
0
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LVL 3

Expert Comment

by:marcjb
ID: 2712034
Glad to help :)
0
 
LVL 3

Expert Comment

by:darinw
ID: 2713195
Community Support has reduced points from 50 to 25
0
 
LVL 3

Expert Comment

by:darinw
ID: 2713196
Hello all,

I am reducing the points on this question to allow the split.

Scattan, you can accept one of the Experts comments as an answer to award the first half of the points. Remember, the Accept Comment as Answer button is in the comment header.

For the second Expert, please create a new question in this topic area. The new question title should be 'For ExpertName -- 10327719' with 25 points.

For your convenience, you can use this link to create the new question:

http://www1.experts-exchange.com/bin/NewQForm?ta=30

darinw
Customer Service
0
 

Author Comment

by:Scattan
ID: 2714963
Thanks everybody!
0

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