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simple question on string concat

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# 1  
Old 08-23-2007
simple question on string concat
This is a simple question...

Code:
char *str = NULL;
int  num = 0;
scanf ("%d", &num);
str = ???


I want str to point to the string num.txt

For e.g: If user enters num = 5,

str should point to "5.txt"

How do I do that ?

Thanks
# 2  
Old 08-23-2007
char buf[10];

snprintf(buf,sizeof(buf),"%d.txt",num);

str=buf;
Last edited by porter; 08-24-2007 at 01:47 AM..
# 3  
Old 08-24-2007
Code:
/* try */
snprintf(buf,sizeof(buf),"%d.txt",num);

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