Reversing order of words in a sentence using stack in C Language | C Program to Reverse the sentence

Reversing order of words in a sentence using stack in C Language | C Program to Reverse the sentence



#include
#include
#include

struct linked_list
{
    char *chr;
    struct linked_list *next;
};
typedef struct linked_list node;
void push(node **p,char *x);
char *pop(node **p);

int main()
{
    char a[50],*temp,*dup;
    strcpy(a,"Hello Friends how are you... Enjoy lernc.blogspot.com ");
    node * head=NULL;
    temp=strtok(a," ");
    while(temp != NULL)
    {
        dup=strdup(temp);
        temp=strtok(NULL," ");
        push(&head,dup);
    }
    strcpy(a,"");
    while((temp=pop(&head))!=NULL)
    {
        strcat(a,temp);
        strcat(a," ");
    }
    a[strlen(a)-1]='\0';
    printf("%s\n",a);
    return 0;
}

void push(node **p,char *x)
{
    node *new_node;
    new_node=(node *)malloc(sizeof(node));
    new_node->chr=x;
    new_node->next=*p;
    *p=new_node;
}

char *pop(node **p)
{
    char *temp=NULL;
    node *tmp;
    if(*p==NULL)
        return (NULL);
    else
    {
        temp=(*p)->chr;
        tmp=*p;
        (*p)=(*p)->next;
        free(tmp);
        return (temp);
    }
}

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More Useful Topics...

 

History Of C..

In the beginning was Charles Babbage and his Analytical Engine, a machine
he built in 1822 that could be programmed to carry out different computations.
Move forward more than 100 years, where the U.S. government in
1942 used concepts from Babbage’s engine to create the ENIAC, the first
modern computer.
Meanwhile, over at the AT&T Bell Labs, in 1972 Dennis Ritchie was working
with two languages: B (for Bell) and BCPL (Basic Combined Programming
Language). Inspired by Pascal, Mr. Ritchie developed the C programming
language.

My 1st Program...


#include
#include
void main ()
{
clrscr ();
printf ("\n\n\n\n");
printf ("\t\t\t*******Pankaj *******\n");
printf ("\t\t\t********************************\n");
printf ("\t\t\t\"Life is Good...\"\n");
printf ("\t\t\t********************************");
getch ();
}

Next Step...


#include
#include

void main ()
{
clrscr ();
printf ("\n\n\n\n\n\n\n\n");
printf ("\t\t\t --------------------------- \n\n");

printf ("\t\t\t | IGCT, Info Computers, INDIA | \n\n");
printf ("\t\t\t --------------------------- ");

getch ();

}

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