Learn C, C++ Programming

      Prev                                                                                              Next

• strcat( ) function in C language concatenates two given strings. It concatenates source string at the end of destination string. Syntax for strcat( ) function is given below.

char * strcat ( char * destination, const char * source );

• Example :

strcat ( str2, str1 ); – str1 is concatenated at the end of str2.
strcat ( str1, str2 ); – str2 is concatenated at the end of str1.

……

• As you know, each string in C is ended up with null character (‘’).
• In strcat( ) operation, null character of destination string is overwritten by source string’s first character and null character is added at the end of new destination string which is created after strcat( ) operation.

Example program for strcat( ) function in C:

• In this program, two strings “cprogramming” and “C tutorial” are concatenated using strcat( ) function and result is displayed as “C tutorial cprogramming”.

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

int main( )
{
   char source[ ] = " cprogramming" ;
   char target[ ]= " C tutorial" ;

   printf ( "nSource string = %s", source ) ;
   printf ( "nTarget string = %s", target ) ;

   strcat ( target, source ) ;

   printf ( "nTarget string after strcat( ) = %s", target ) ;
}

Output:

Other C String functions:

• String.h header file supports all the string functions in C language. All the string functions are given below.
• Click on each string function name below to display example programs.

      Prev                                                                                              Next

.