Stack Queue and Circular Queue

Stack Using Array.cpp

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+#include<iostream>
+using namespace std;
+
+int stack[10];
+int top=0;
+
+void push(int x)
+{
+	if(top==10)
+	{
+		cout<<"\nOverflow";
+	}
+	else
+	{
+		stack[top++]=x;
+	}
+}
+
+void pop()
+{
+	if (top==0)
+	{
+		cout<<"\nUnderflow";
+	}
+	else
+	{
+		cout<<"\n"<<stack[--top]<<" deleted";
+	}
+}
+
+void show()
+{
+	for (int i = 0; i < top; i++)
+	{
+		cout<<stack[i]<<"\n";
+	}
+}
+
+int main()
+{
+	int ch, x;
+	do
+	{
+		cout<<"\n1. Push";
+		cout<<"\n2. Pop";
+		cout<<"\n3. Print";
+		cout<<"\nEnter Your Choice : ";
+		cin>>ch;
+		if (ch==1)
+		{
+			cout<<"\nInsert : ";
+			cin>>x;
+			push(x);
+		}
+		else if (ch==2)
+		{
+			pop();
+		}
+		else if (ch==3)
+		{
+			show();
+		}
+	}
+	while(ch!=0);
+
+	return 0;
+}
+