StackQueueImplementation/stack1.c at main · VishwaCPrograms/StackQueueImplementation · GitHub

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/* Name: Vishwa Venkateshwaran */

#include<stdio.h>
#include<stdlib.h>
#include"lab4.h"

Stack*newStack1() {
Stack*Stack=malloc(sizeof(Stack));
Stack1*stack1=malloc(sizeof(Stack1));
if (Stack) {
Stack->Stack=stack1;
Stack->length=lengthS1;
Stack->push=pushS1;
Stack->pop=popS1;
stack1->length=0;
	}
returnStack;
}

voidpushS1(void*pointer, intdata) {
Stack1*stack1= (Stack1*) pointer;
LLNode*newNode=malloc(sizeof(LLNode));
if(stack1->firstNode) {
newNode->next=stack1->firstNode;
	} else {
stack1->lastNode=newNode;
	}
stack1->firstNode=newNode;
stack1->length++;
newNode->data=data;
}

intpopS1(void*pointer) {
Stack1*stack1= (Stack1*) pointer;
LLNode*returningNode=stack1->firstNode;
intdata=stack1->firstNode->data;
free(returningNode);
stack1->firstNode=stack1->firstNode->next;
stack1->length--;
returndata;
}

intlengthS1(void*pointer) {
Stack1*stack1= (Stack1*) pointer;
returnstack1->length;
}