❮ C Exercise Example54 C Function Feof ❯

C Library Function - `strcpy()`

Description

The C library function char *strcpy(char *dest, const char *src) copies the string pointed to by src to dest.

It is important to note that if the destination array dest is not large enough, and the length of the source string is too long, it may lead to buffer overflow.

Declaration

Here is the declaration for the strcpy() function.

char *strcpy(char *dest, const char *src)

Parameters

dest -- Pointer to the destination array where the content is to be copied.
src -- The string to be copied.

Return Value

This function returns a pointer to the final destination string dest.

Example

The following example demonstrates the use of the strcpy() function.

Example 1

#include <stdio.h>
#include <string.h>

int main()
{
   char src[40];
   char dest[100];

   memset(dest, '\0', sizeof(dest));
   strcpy(src, "This is tutorialpro.org");
   strcpy(dest, src);

   printf("Final destination string: %s\n", dest);

   return(0);
}

Let's compile and run the above program, which will produce the following result:

Final destination string: This is tutorialpro.org

Example 2

#include <stdio.h>
#include <string.h>

int main ()
{
  char str1[]="Sample string";
  char str2[40];
  char str3[40];
  strcpy (str2,str1);
  strcpy (str3,"copy successful");
  printf ("str1: %s\nstr2: %s\nstr3: %s\n",str1,str2,str3);
  return 0;
}