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

    void main()
    {
        char a[30];
        int i,n,n1;
        clrscr();
        printf("\n enter the String : ");
        scanf("%[^\n]",a);
        printf("\n extract start: ");
        scanf("%d",&n);
        printf("\n extract how many : ");
        scanf("%d",&n1);
        printf("\n extarct charecter are : ");
        for(i=n-1;i<n1+n-1;i++)
        {
            printf("%c",a[i]);
        }
        getch();
    }
/*
    ******
    OUTPUT
    ******

     enter the String : CPROGRAMMING

     extract start: 3

     extract how many : 4

     extarct charecter are : ROGR
*/