beginnersbook.com

  • Home
  • All Tutorials
    • Learn Servlet
    • Learn JSP
    • Learn JSTL
    • Learn C
    • Learn C++
    • Learn MongoDB
    • Learn XML
    • Learn Python
    • Learn Perl
    • Learn Kotlin
    • Learn jQuery
  • Core Java
  • OOPs
  • Collections
  • Java I/O
  • JSON
  • DBMS

C strncpy() Function – C tutorial

By Chaitanya Singh | Filed Under: C library functions

The strncpy() function is similar to the strcpy() function, except that it copies only the specified number of characters from source string to destination string.

C strncpy() declaration

char *strncpy(char *str1, const char *str2, size_t n)

str1 – Destination string. The string in which the first n characters of source string str2 are copied.
str2 – Source string
n – number of characters of source string that needs to be copied.

Return value of strncpy()

It returns the pointer to the destination string after copying the n characters of source string into it.

Example: strncpy() function

#include <stdio.h>
#include <string.h>
int main () {
   char str1[20]; 
   char str2[25];
   /* The first argument in the function is destination string. 
    * In this case we are doing full copy using the strcpy() function. 
    * Here string str2 is destination string in which we are copying the 
    * specified string 
    */ 
   strcpy(str2, "welcome to beginnersbook.com");

   /* In this case we are doing a limited copy using the strncpy()
    * function. We are copying only the 7 characters of string str2 to str1
    */
   strncpy(str1, str2, 7);

   printf("String str1: %s\n", str1); 
   printf("String str2: %s\n", str2);

   return 0;
}

Output:

String str1: welcome
String str2: welcome to beginnersbook.com

Related Posts:

  1. C – strcoll() function
  2. C – strcmp() function
  3. C – strchr() function
  4. C – strncat() function

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

C Programming Tutorial

  • Turbo C++ installation
  • First C Program
  • C - Keywords
  • Operator precedence
  • C - if statement
  • C - if..else
  • C - for loop
  • C - while loop
  • C - do while loop
  • C - continue
  • C - break statement
  • C - switch..case
  • C - goto statement
  • C - Arrays
  • 2 D array
  • C - String
  • C - functions
  • Function call by reference
  • Function call by value
  • Array to function
  • C - Structures
  • C - Pointers
  • Pointer to Pointer
  • Pointers to functions
  • C - function pointers
  • Pointer & Array
  • C - File I/O
  • C Programming Examples

Recently Added..

  • JSON Tutorial
  • Java Regular Expressions Tutorial
  • Java Enum Tutorial
  • Java Annotations Tutorial

Copyright © 2012 – 2022 BeginnersBook . Privacy Policy . Sitemap