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Program to perform some basic operations on string

Posted By: Poppy Brown     Category: C Programming     Views: 5758

Program to perform some basic operations on string.

Code for Program to perform some basic operations on string in C Programming

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

int xstrlen ( char * ) ;
void xstrcpy ( char *, char * ) ;
void xstrcat ( char *, char * ) ;
int xstrcmp ( char *, char * ) ;
void show ( char * ) ;

void main( )
{
    char s1[ ] = "kicit" ;
    char s2[ ] = "Nagpur" ;
    char s3[20] ;
    int len ;

    clrscr( ) ;

    printf ( "\nString s1: %s", s1 ) ;
    len = xstrlen ( s1 ) ;
    printf ( "\nlength of the string s1: %d", len ) ;

    printf ( "\nString s2: %s", s2 ) ;

    xstrcpy ( s3, s1 ) ;
    printf ( "\nString s3 after copying s1 to it: %s", s3 ) ;

    xstrcat ( s3, s2 ) ;
    printf ( "\nString s3 after concatenation: %s", s3 ) ;

    if ( xstrcmp ( s1, s2 ) == 0 )
        printf ( "\nThe strings s1 and s2 are similar" ) ;
    else
        printf ( "\nThe strings s1 and s2 are not similar" ) ;

    getch( ) ;
}

/* finds the length of the string */
int xstrlen ( char *s ) { int l = 0 ; while ( *s ) { l++ ; s++ ; } return l ; } /* copies source string s to the target string t */
void xstrcpy ( char *t, char *s ) { while ( *s ) { *t = *s ; t++ ; s++ ; } *t = '\0' ; } /* concatenates the two strings */
void xstrcat ( char *t, char *s ) { while ( *t ) t++ ; while ( *s ) *t++ = *s++ ; *t = '\0' ; } /* compares two strings s and t for equality */
int xstrcmp ( char *s, char *t ) { while ( *s == *t ) { if ( ! ( *s ) ) return 0 ; s++ ; t++ ; } return ( *s - *t ) ; }
  
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Poppy Brown
Poppy Brown author of Program to perform some basic operations on string is from London, United Kingdom.
 
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