C++ reference: cstring: strncpy

strncpy
char * strncpy ( char * dest, const char * src, sizet_t num );

string.h

cplusplus.com

Copy characters from one string to another.
Copies the first num characters of src to dest.
No null-character is implicitly appended to dest after copying process. So dest may not be null-terminated if no null-caracters are copied from src.
If num is greater than the length of src, dest is padded with zeros until num.

Parameters.

dest: Destination string. Space allocated should be at least num characters long.
string2: Null-terminated string.
num: Number of characters to be copied.

Return Value.
dest is returned.

Portability.
Defined in ANSI-C.

Example.

/* strncpy example */
#include <stdio.h>
#include <string.h>

main ()
{
  char str1[]= "To be or not to be";
  char str2[6];
  strncpy (str2,str1,5);
  str2[5]='\0';
  puts (str2);
  return 0;
}

Output:
To be

See also.
strcpy, strcat, strncat, strstr, memcpy