WAP to search a character in a string

/*WAP to search a character in a string*/

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

main()
{
 char *ptr, str[50];
 int ch;
 // Input of String & character
 printf("\n Enter the String \n");
 gets(str);
 printf("\n Enter the character to search ");
 ch = getchar();
 // Searching the character
 ptr = strchr(str,ch);
 if(ptr == NULL)
  printf("\n Not Found");
 else
  printf("\n The character %c is at the position %d\n",ch,ptr-str);
 getch();
 return 0;
}

WAP to Formatting strings with 't' tab

/*WAP to Formatting strings with 't' tab */

#include<stdio.h>
#include<conio.h>
main( )
{
 printf ( "You\tmust\tbe\tcrazy\nto\thate\tthis\tbook" ) ;
       getch();
}

WAP to Formatting strings with printf( )

/*WAP to Formatting strings with printf( ) */

#include<stdio.h>
#include<conio.h>
main( )
{
 char  firstname1[ ] = "Sandy" ;
 char  surname1[ ] = "Malya" ;
 char  firstname2[ ] = "AjayKumar" ;
 char  surname2[ ] = "Gurubaxani" ;

 printf ( "\n%20s%20s", firstname1, surname1 ) ;
 printf ( "\n%20s%20s", firstname2, surname2 ) ;
       getch();
}

WAP to interchange string3 with string4

/*WAP to interchange string3 with string4*/

#include<stdio.h>
#include<conio.h>
main( )
{
 char  *names[ ] = {
      "akshay",
      "parag",
      "raman",
      "srinivas",
      "gopal",
      "rajesh"
   } ;
 char  *temp ;

 printf ( "Original: %s %s", names[2], names[3] ) ;

 temp = names[2] ;
 names[2] = names[3] ;
 names[3] = temp ;

 printf ( "\nNew: %s %s", names[2], names[3] ) ;
}

WAP to Exchange names using 2-D array of characters

/*WAP to Exchange names using 2-D array of characters */

#include<stdio.h>
#include<conio.h>
main( )
{
 char  names[ ][10] = {
      "akshay",
      "parag",
      "raman",
      "srinivas",
      "gopal",
      "rajesh"
        } ;
 int  i ;
 char  t ;

 printf ( "\nOriginal: %s %s", &names[2][0], &names[3][0] ) ;  

 for ( i = 0 ; i <= 9 ; i++ )
 {
  t = names[2][i] ;
  names[2][i] = names[3][i] ;
  names[3][i] = t ;
 }

 printf ( "\nNew: %s %s", &names[2][0], &names[3][0] ) ;
}

WAP to search a string in two dimensional array

/*WAP to search a string in two dimensional array */

#include<stdio.h>
#include<conio.h>
#define FOUND 1
#define NOTFOUND 0
main( )
{
 char  masterlist[6][10] = {
       "akshay",
       "parag",
       "raman",
       "srinivas",
       "gopal",
       "rajesh"
         } ;
 int  i, flag, a ;
 char  yourname[10] ;
 printf ( "\nEnter your name " ) ;
 scanf ( "%s", yourname ) ;

 flag = NOTFOUND ;
 for ( i = 0 ; i <= 5 ; i++ )
 {
  a = strcmp ( &masterlist[i][0], yourname ) ;
  if ( a == 0 )
  {
   printf ( "Welcome, you can enter the palace" ) ;
   flag = FOUND ;
   break ;
  }
 }

 if ( flag == NOTFOUND )
  printf ( "Sorry, you are a trespasser" ) ;
}

WAP to Use of strcmp() function

/*WAP to Use of strcmp() function */

#include<stdio.h>
#include<conio.h>
main( )
{
 char  string1[ ] = "Jerry" ;
 char  string2[ ] = "Ferry" ;
 int  i, j, k ;

 i = strcmp ( string1, "Jerry" ) ;
 j = strcmp ( string1, string2 ) ;
 k = strcmp ( string1, "Jerry boy" ) ;

 printf ( "\n%d %d %d", i, j, k ) ;
}

WAP to Use of strcat() function

/*WAP to Use of strcat() function */

#include<stdio.h>
#include<conio.h>
main( )
{
 char  source[ ] = "Folks!" ;
 char  target[30] = "Hello" ;

 strcat ( target, source ) ;
 printf ( "\nsource string = %s", source ) ;
 printf ( "\ntarget string = %s", target ) ;
}

WAP to copy string without changing source string

/*WAP to copy string without changing source string */

#include<stdio.h>
#include<conio.h>
main( )
{
 char  source[ ] = "codezworld" ;
 char  target[20] ;

 xstrcpy ( target, source ) ;
 printf ( "\nsource string = %s", source ) ;
 printf ( "\ntarget string = %s", target ) ;
}

void xstrcpy ( char *t, const char *s )
{
 while ( *s != '\0' )
 {
  *t = *s ;
  s++ ;
  t++ ;
 }
 *t = '\0' ;
}

WAP that look-alike of the function strcopy( )

/*WAP that look-alike of the function strcopy( ) */

#include<stdio.h>
#include<conio.h>
main( )
{
 char  source[ ] = "codezworld" ;
 char  target[20] ;

 xstrcpy ( target, source ) ;
 printf ( "\nsource string = %s", source ) ;
 printf ( "\ntarget string = %s", target ) ;
}

xstrcpy ( char  *t, char  *s )
{
 while ( *s != '\0' )
 {
  *t = *s ;
  s++ ;
  t++ ;
 }
 *t = '\0' ;
}

WAP to Use of string copy strcopy() function

/*WAP to Use of string copy strcopy() function */

#include<stdio.h>
#include<conio.h>
main( )
{
 char  source[ ] = "codezworld" ;
 char  target[20] ;

 strcpy ( target, source ) ;
 printf ( "\nsource string = %s", source ) ;
 printf ( "\ntarget string = %s", target ) ;
}

WAP that look-alike of the function strlen( )

/*WAP that look-alike of the function strlen( ) */

#include<stdio.h>
#include<conio.h>
main( )
{
 char  arr[ ] = "codezworld" ;
 int  len1, len2 ;

 len1 = xstrlen ( arr ) ;
 len2 = xstrlen ( "A blog of programs" ) ;

 printf ( "\nstring = %s length = %d", arr, len1 ) ;
 printf ( "\nstring = %s length = %d", "A blog of programs", len2 ) ;
}

xstrlen ( char  *s )
{
 int  length = 0 ;

 while ( *s != '\0' )
 {
  length++ ;
  s++ ;
 }

 return ( length ) ;
} 

WAP to find length of string using strlen() function

/*WAP to find length of string using strlen() function */

#include<stdio.h>
#include<conio.h>
main( )
{
 char  arr[ ] = "codezworld" ;
 int  len1, len2 ;

 len1 = strlen ( arr ) ;
 len2 = strlen ( "A blog of programs" ) ;

 printf ( "\nstring = %s length = %d", arr, len1 ) ;
 printf ( "\nstring = %s length = %d", "A blog of programs", len2 ) ;
}

WAP to Input of strings containing spaces

/*WAP to Input of strings containing spaces */

#include<stdio.h>
#include<conio.h>
main( ) 
{
 char  name[25] ;

 printf ( "Enter your full name " ) ;
 gets ( name ) ;
 puts ( "Hello!" ) ;
 puts ( name ) ;
}

WAP to input & print a string

/*WAP to input & print a string */

#include<stdio.h>
#include<conio.h>
main( )
{
 char  name[25] ;
 printf ( "Enter your name " ) ;
 scanf ( "%s", name ) ;
 printf ( "Hello %s!", name ) ;
}

WAP to Using pointer to access array elements

/*WAP to Using pointer to access array elements */

#include<stdio.h>
#include<conio.h>
main( )
{
 char  name[ ] = "Goldfish" ;
 char  *ptr ;

 ptr = name ;  /* store base address of string */

 while ( *ptr != `\0' )
 {
  printf ( "%c", *ptr ) ;
  ptr++ ;
 }
}

WAP to demonstrate printing of string 2

/*WAP to demonstrate printing of string 2*/

#include<stdio.h>
#include<conio.h>
main( )
{
 char  name[ ] = "Klinsman" ;
 int  i = 0 ;

 while ( name[i] != `\0' )
 {
  printf ( "%c", name[i] ) ;
  i++ ;
 }
}

WAP to demonstrate printing of a string

/*WAP to demonstrate printing of a string */

#include<stdio.h>
#include<conio.h>
main( )
{
 char  name[ ] = "Goldfish" ;
 int  i = 0 ;

 while ( i <= 9 )
 {
  printf ( "%c", name[i] ) ;
  i++ ;
 }
}