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

    void main()
    {
        char a[20];
        int i=0;
        clrscr();
        do
        {
            printf("\nWho is inventor of c : ");
            scanf("%s",a);
            if(strcmp(a,"denishrich")==0)
            {
            printf("\n good");
            i=5;
            break;
            }
            elseif(i==2)
            break;
            printf("\ntry again ");
            i++;
        }while(i<3);
        if(i!=5)
        printf("\n correct answer is denishrich ");
        getch();
    }

/*
     ******
     output
     ******

    Who is inventor of c : den

    try again
    Who is inventor of c : denishrich

    good
*/