To delete n characters from a given position in a given string

Description:

in this program we need to delete a string from the given string at a specified position.

Algorithm:

Step 1: start

Step 2: read string

Step 3: find the length of the string

Step 4: read the value of number of characters to be deleted and positioned

Step 5: string copy part of string from position to end, and (position+number of      

             characters to end)

Step 6: stop

Program:

#include <stdio.h>

#include <conio.h>

#include <string.h>

void delchar(char *x,int a, int b);

void main()

{

     char string[10];

     int n,pos,p;

     clrscr();

     puts("Enter the string");

     gets(string);

     printf("Enter the position from where to delete");

     scanf("%d",&pos);

     printf("Enter the number of characters to be deleted");

     scanf("%d",&n);

     delchar(string, n,pos);

     getch();

}

// Function to delete n characters

void delchar(char *x,int a, int b)

{

             if ((a+b-1) <= strlen(x))

  {

                         strcpy(&x[b-1],&x[a+b-1]);

                          puts(x);

              }

}

Output:

1.enter the string

   nagaraju

   Enter the position from where to delete:4

    Enter the number of charcters to be deleted3

    nagju

 2. enter the string

      kaliraju

      Enter the position from where to delete:0

       Enter the number of charcters to be deleted4

       Raju

Conclusion: the program is error free

VIVA QUESATIONS:

1)      Which command is used to delete the strings ?

Ans: delstr();

2)      What are the various types of string functions ?

Ans: Strcat(), strcpy(), delstr(), substr() ,strlen()etc..,