---
name: "wnstr"
section: "3"
platform: "linux"
package: "libwn-dev"
version: "6.0-17"
release: "Debian 4.0 (Etch)"
platforms: ["linux"]
url: "https://new.carta.tech/wnstr"
---

# wnstr(3)

string operations

## NAME

wn\_strncpy, wn\_stracpy, wn\_strncat, wn\_stracat, wn\_stracat3, wn\_stracat4, wn\_stracat5, wn\_stracat6, wn\_char\_in\_string - string operations

## SYNOPSIS

```
#include <wn/wnstr.h>

wn_strncpy(out,in,n)
char out[],in[];
int n;

wn_stracpy(&out,in)
char out[],in[];

wn_strncat(out,in,n)
char out[],in[];
int n;

wn_stracat(&out,s1,s2)
char out[],s1[],s2[];

wn_stracat3(&out,s1,s2,s3)
char out[],s1[],s2[],s3[];

wn_stracat4(&out,s1,s2,s3,s4)
char out[],s1[],s2[],s3[],s4[];

wn_stracat5(&out,s1,s2,s3,s4,s5)
char out[],s1[],s2[],s3[],s4[],s5[];

wn_stracat6(&out,s1,s2,s3,s4,s5,s6)
char out[],s1[],s2[],s3[],s4[],s5[],s6[];

bool wn_char_in_string(c,s)
char c,s[];
```

## DESCRIPTION

These routines operate on null-terminated character strings.  They do not check for overflow of any receiving string.

**wn\_strncpy** is NOT the same as "strncpy"; it copies strlen(*in*)  or *n* chars, whichever is less, and then null terminates.  The target can become as long as n+1 chars, including the null-termination.

**wn\_stracpy** allocates (from the current memory group) strlen(*in*)+1 chars of memory for *out*, and then copies in to it.

**wn\_strncat** is NOT the same as "strncat"; it appends chars from *in* while *out* has strlen \< *n*, and then null terminates.  The target can become as long as n+1 chars, including the null-termination.

**wn\_stracat** allocates (from the current memory group)  strlen(*s1*)+strlen(*s2*)+1 chars of memory for *out*, then puts the concatonation of *s1* and *s2* *in* this memory. **wn\_stracat3** concatonates 3 strings in the same manner, etc.

**wn\_char\_in\_string** returns **TRUE** iff the character *c* is  contained in the null-terminated string *s*.

## SEE ALSO

wncmp

## AUTHOR

Will Naylor