01  #include <stdio.h>
02  #include <string.h>
03  
04  int main()
05  {
06   char src_str[30] = "Hello students";
07   char dest_str[30];
08   
09   printf("src_str: %sn", src_str);
10   strncpy(dest_str, src_str,5);
11   printf("dest_str: %sn", dest_str);
12  
13   strncpy(dest_str, "Copy first 13 charaters",13);
14   printf("dest_str: %sn", dest_str);
15  
16   return 0;
17  }

 
 OUTPUT :
 
 src_str: Hello students
 dest_str: Hello
 dest_str: Copy first 13
 
  /* strncpy copies up to specified characters from src into dest, truncating or
 null-padding dest. The target string, dest, might not be null-terminated if the length of src
 is maxlen or more.  */