How to dynamically create file names?

[Lakshmipathi]

Hi all,
I wanted to created file names dynamically,
so i tried something like this,
fun(){
int dy=97;
while(cond){
---
----
name[0]='n';name[1]='m';name[2]='a';
name[3]=dy;
//so i got nmaa
open (file)
//do something
close(file)
}
---
---
but the problem is i can created file names like,
nmaa,nmab,nmac,namd.........namz.
only upto z...
how to dynamically create unique file name?
If you know some other logic or solution please help me.
Thanks.

[CodeRoot]

one possible option for you - read:

man mktemp

[elitecore]

a unique filename can be generated by tmpnam() function.
if the temporary file is to be used immediately you can name it and open it
uing tmpfile() function.


#include<stdio.h>


int main()
{
char tmpname[L_tmpnam];
char *filename;
FILE *tmpfp;

filename=tmpnam(tmpname);

printf("Temporary file name is:%s\n",filename);
tmpfp=tmpfile();
if(tmpfp)
printf("Opened a temporary file OK\n");
else
perror("Tmpfile");
exit(0);
}

[Lakshmipathi]

Thanks guyz...i will try both and let you know result.
Thanks u

[CodeRoot]

I'm sorry -- I was thinking 'bash shell', instead of 'C'... (guess I wasn't paying attention...)

[Lakshmipathi]

Hi,
in C too we have mktemp see here