Comparing String without using library functions

//WAP to Compare two strings without using library functions

#include<stdio.h>

int main()

{

   char str1[1000], str2[1000];

   int i, flag=0;

   printf("Enter the First string :\n");

   gets(str1);

   printf("Enter the Second string :\n");

   gets(str2);

   for(i=0;str1[i]!='\0';i++)

   {

  if(str1[i]==str2[i])

      continue;

  else

  {

      flag=1;

      break;

  }

   }

   if(flag==0)

printf("Strings are equal \n");

   else

printf("Strings are not equal \n");

   return 0;

}

/******************OUTPUT***********************
Enter the First string :
abhishek wadhwa
Enter the Second string :
abhishek wadhwa
Strings are equal

*/

WAP TO PRINT ASCII VALUES OF ENTERED CHARACTERS.

//WAP TO PRINT ASCII VALUES OF ENTERED CHARACTERS.
#include<conio.h>
#include<stdio.h>
void main()
{
char a[20],ch='Y';
int i,x;
clrscr();
do
{
fflush(stdin);
printf("\n\nENTER THE STRING:");
gets(a);
printf("\n\nENTERED STRING IS");
printf("\n\n");
puts(a);
printf("\n\nASCII VALUES FOR ENTERED STRING IS:");
for(i=0;a[i]!='\0';i++)
{
printf("\n\n");
printf("%d",a[i]);
}
printf("\n\nDO YOU WANT TO CONTINUE?");
scanf("%s",&ch);
}while(ch=='y'||ch=='Y');
printf("\n\nBYE!!!BYE!!!\n\nProgrmmer:ABHISHEK WADHWA");
getch();
}

/*----------------------------------------------------------------------
OUTPUT
------------------------------------------------------------------------

73

74

75

DO YOU WANT TO CONTINUEY


ENTER THE STRING:!@#$%^&*()_+


ENTERED STRING IS

!@#$%^&*()_+


ASCII VALUES FOR ENTERED STRING IS:

33

64

35

36

37

94

38

42

40

41

95

43

DO YOU WANT TO CONTINUE?N


BYE!!!BYE!!!

Progrmmer:ABHISHEK WADHWA
*/

WAP TO COMPARE TWO STRINGS

//WAP TO COMPARE TWO STRINGS.

#include<stdio.h>
#include<conio.h>
#include<string.h>
void main()
{
char A[20],b[20];
char ch='y';
int x;
clrscr();
do
{
fflush(stdin);
puts("\nENTER THE STRING:");
gets(A);
puts("\n\nENTERED STRING IS");
puts("\n\n");
puts(A);
fflush(stdin);
puts("\nENTER THE STRING:");
gets(b);
fflush(stdin);
puts("\n\nENTERED STRING IS");
puts("\n\n");
puts(b);
x=strcmp(A,b);
if(x==0)
printf("\n\nTWO STRINGS ARE EQUAL");
else
printf("\n\nTWO STRINGS ARE NOT EQUAL");
printf("\n\nDO YOU WANT TO CONTINUE?");
scanf("%s",&ch);
}while(ch=='y'||ch=='Y');
getch();
}
/*---------------------------------------------------------
OUTPUT
-----------------------------------------------------------
ENTER THE STRING:
ABHISHEK


ENTERED STRING IS



ABHISHEK

ENTER THE STRING:
WADHWA


ENTERED STRING IS



WADHWA


TWO STRINGS ARE NOT EQUAL

DO YOU WANT TO CONTINUE?Y

ENTER THE STRING:
WADHWA


ENTERED STRING IS



WADHWA

ENTER THE STRING:
WADHWA


ENTERED STRING IS



WADHWA


TWO STRINGS ARE EQUAL

DO YOU WANT TO CONTINUE?N
*/

CONCATENATE TWO STRINGS WITHOUT USING LIBRARY FUNCTIONS

//WAP TO CONCATENATE TWO STRINGS.
//WITHOUT USING LIBRARY FUNCTIONS
#include<stdio.h>
#include<conio.h>
void main()
{
char a[10],b[10],c[40];
int i,j;
clrscr();
printf("\n\nENTER FIRST STRING:");
gets(a);
printf("\n\nENTER SECOND STRING:");
gets(b);
for(i=0;a[i]!='\0';i++)
c[i]=a[i];
for(j=0;a[j]!='\0';j++)
{
c[i]=b[j];
i++;
}
c[i]='\0';
printf("\n\nTHE COMBINED STRING IS:");
puts(c);
getch();
}
/*************************************************************
OUTPUT
**************************************************************


ENTER FIRST STRING:ABHISHEK


ENTER SECOND STRING:WADHWA


THE COMBINED STRING IS:ABHISHEKWADHWA
*/

Program to Concatenate two Strings

//WAP TO CONCATENATE TWO STRINGS.

#include<stdio.h>
#include<conio.h>
#include<string.h>
void main()
{
char A[20],b[20];
clrscr();
puts("\nENTER THE STRING:");
gets(A);
puts("\n\nENTERED STRING IS");
puts("\n\n");
puts(A);
puts("\nENTER THE STRING:");
gets(b);
puts("\n\nENTERED STRING IS");
puts("\n\n");
puts(b);
strcat(A,b);
printf("\n\nAFTER CONCATINATION STRING IS:%s",A);
getch();
}
/*---------------------------------------------------------
OUTPUT
-----------------------------------------------------------

ENTER THE STRING:
ABHISHEK


ENTERED STRING IS



ABHISHEK

ENTER THE STRING:
WADHWA


ENTERED STRING IS



WADHWA


AFTER CONCATINATION STRING IS:ABHISHEKWADHWA
*/

WAP TO REVERSE A STRING.

//WAP TO REVERSE A STRING.
#include<stdio.h>
#include<conio.h>
#include<string.h>
void main()
{
char A[20];
clrscr();
puts("\nENTER THE STRING:");
gets(A);
puts("\n\nENTERED STRING IS");
puts("\n\n");
puts(A);
strrev(A);
printf("\n\nAFTER REVERSING STRING IS:%s",A);
getch();
}
/*---------------------------------------------------------
OUTPUT
-----------------------------------------------------------
ENTER THE STRING:
ABHISHEK


ENTERED STRING IS



ABHISHEK


AFTER REVERSING STRING IS:KEHSIHBA
*/