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All About C/StackasArray.c

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+#include<stdio.h>
+#include<conio.h>
+int top=-1,size;
+void push(int arr[])
+{
+    int num;
+    if(top==size-1)
+        printf("Stack Overflow!!!");
+    else
+    {
+        printf("Enter a Number for insertion=");
+        scanf("%d",&num);
+        top++;
+        arr[top]=num;
+        printf("Element Inserted Successfully!!!");
+    }
+}
+void pop(int arr[])
+{
+    if(top==-1)
+        printf("Stack UnderFlow!!!");
+    else
+    {
+        int x;
+        x=arr[top];
+        top--;
+        printf("Deleted Element=%d",x);
+    }
+}
+void display(int arr[])
+{
+    int i;
+    printf("Stack Status:\n");
+    for(i=0;i<=top;i++)
+    {
+        printf("%d\t",arr[i]);
+    }
+}
+int main()
+{
+    int x,arr[50];
+    char ch;
+    clrscr();
+    printf("----------Stack As An Array----------\n");
+    printf("Enter the maximum number of elements=");
+    scanf("%d",&size);
+    do
+    {
+        printf("\n\tPress 1 for Insertion\n\tPress 2 for Deletion\n\tPress 3 for Display\n\tEnter your choice=");
+        scanf("%d",&x);
+	//system("cls");
+        switch(x)
+        {
+            case 1: push(arr);break;
+            case 2:pop(arr);break;
+            case 3:display(arr);break;
+            default:printf("\nWrong Choice!!! Enter Again!!!");break;
+        }
+        printf("\nDo You Want To Continue(Y/N)=");
+        ch=getch();
+    }while(ch=='Y'||ch=='y');
+}