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stackSLL.c
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stackSLL.c
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#include <stdio.h>
#include <stdlib.h>
struct node{
int data;
struct node *link;
};
struct node *top, *new, *ptr;
struct node* createNode(){
int d;
printf("\nEnter The Data: ");
scanf("%d", &d);
struct node *temp = (struct node*)malloc(sizeof(struct node*));
temp -> data = d;
temp -> link = NULL;
return temp;
}
void push(){
new = createNode();
if (top != NULL)
new -> link = top;
top = new;
printf("\nItem Inserted!");
}
void pop(){
if (top == NULL)
printf("\nStack Empty!");
else{
ptr = top;
printf("\nPopped Item: %d", ptr -> data);
top = ptr -> link;
free(ptr);
}
}
void peek(){
if (top == NULL)
printf("\nStack Empty!");
else
printf("\nStack Peek: %d", top -> data);
}
void display(){
if (top == NULL)
printf("\nStack Empty!");
else{
ptr = top;
printf("\nStack Data: \n");
while(ptr != NULL){
printf("%d\t", ptr -> data);
ptr = ptr -> link;
}
}
}
void main(){
int menuFlag = 1;
while (menuFlag == 1){
printf("\n\t\t ============= MENU =============");
printf("\n\t\t 1) Push");
printf("\n\t\t 2) Pop");
printf("\n\t\t 3) Peek");
printf("\n\t\t 4) Display");
printf("\n\t\t 5) Exit");
printf("\n\t\t ================================\n");
int o;
printf("\nEnter Your Option: ");
scanf("%d", &o);
switch(o){
case 1:
push();
break;
case 2:
pop();
break;
case 3:
peek();
break;
case 4:
display();
break;
case 5:
printf("\nClosing...\n");
menuFlag = 0;
break;
default:
printf("\nPlease Enter A Valid Option!\n");
}
}
}