Wednesday, December 31, 2014

Equivalent Gray’s Code using Recursion in c pgm



Convert Binary Code of a Number into its Equivalent Gray’s Code using Recursion

#include 
#include  
int bintogray(int);
 
int main ()
{
    int bin, gray;
    clrscr();
    printf("Enter a binary number: ");
    scanf("%d", &bin);
    gray = bintogray(bin);
    printf("The gray code of %d is %d\n", bin, gray);
    return 0;
}
 
int bintogray(int bin)
{
    int a, b, result = 0, i = 0;
 
    if (!bin)
    {
        return 0;
    }
    else
    {
        a = bin % 10;
        bin = bin / 10;
        b = bin % 10;
        if ((a && !b) || (!a && b))
        {
            return (1 + 10 * bintogray(bin));
        }
        else
        {
            return (10 * bintogray(bin));
        }
    }
}

Output
 
Enter a binary number:  1011101
The gray code of 1011101 is 1110011

Print the Alternate Nodes in a Linked List without using Recursion

#include 
#include
#include 
 
struct node
{
    int a;
    struct node *next;
};
 
void generate(struct node **);
void display(struct node *);
void delete(struct node **);
 
int main()
{
    struct node *head = NULL;
 
    generate(&head);
    printf("\nDisplaying the alternate nodes\n");
    display(head);
    delete(&head);
 
    return 0;
}
 
void display(struct node *head)
{
    int flag = 0;
 
    while(head != NULL)
    {
        if (!(flag % 2))
        {
           printf("%d  ", head->a);
        }
        flag++;
        head = head->next;
    }
}
 
void generate(struct node **head)
{
    int num, i;
    struct node *temp;
 
    printf("Enter length of list: ");
    scanf("%d", &num);
    for (i = num; i > 0; i--)
    {
        temp = (struct node *)malloc(sizeof(struct node));
        temp->a = i;
        if (*head == NULL)
        {
            *head = temp;
            (*head)->next = NULL;
        }
        else
        {
            temp->next = *head;
            *head = temp;
        }
    }
}
 
void delete(struct node **head)
{
    struct node *temp;
    while (*head != NULL)
    {
        temp = *head;
        *head = (*head)->next;
        free(temp);
    }
}
}

Output
 
Enter length of list: 20
 
Displaying the alternate nodes
1  3  5  7  9  11  13  15  17  19

 

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