jkjnknklkl

slll.c

@@ -0,0 +1,106 @@
+#include<stdio.h>
+#include<stdlib.h>
+struct node
+{
+	int info;
+	struct node *ptr;
+}*top,*top1,*temp;
+
+void push(int data);
+void pop();
+void display();
+void create();
+int count=0;
+void main()
+{
+	int  no,ch,e;
+	printf("\n 1-push");
+	printf("\n 2-pop");
+	printf("\n 3-exit");
+	printf("\n 4-display");
+
+	create();
+	while(1)
+	{
+		printf("\n enter the choice");
+		scanf("%d",&ch);
+		switch(ch)
+		{
+			case 1:
+				printf("enter the data");
+				scanf("%d",&no);
+				push(no);
+				break;
+			case 2:
+				pop();
+				break;
+			case 3:
+				exit(0);
+
+
+
+				break;
+			case 4:
+				display();
+				break;
+
+		}
+	}
+}
+	void create()
+	{
+		top=NULL;
+	}
+
+	void push(int data)
+	{
+		if(top==NULL)
+		{
+			top=(struct node *) malloc(1*sizeof(struct node));
+			top ->ptr=NULL;
+			top ->info=data;
+		}
+		else
+		{
+			temp=(struct node*) malloc(1*sizeof(struct node));
+			temp->ptr=top;
+			temp->info=data;
+			top=temp;
+		}
+		count++;
+	}
+
+
+	void display()
+	{
+		top1=top;
+		if(top1==NULL)
+		{
+			printf("stack is empty");
+			return;
+		}
+		while(top1 !=NULL)
+		{
+			printf("%d",top1->info);
+			top1=top1->ptr;
+		}
+	}
+	void pop()
+	{
+		top1=top;
+		if(top1==NULL)
+		{
+			printf("empty stack");
+			return;
+		}
+		else
+		{
+			top1=top1->ptr;
+
+			printf("popped element is%d",top->info);
+			free(top);
+			top=top1;
+			count--;
+		}
+	}
+

test1.java

@@ -0,0 +1,56 @@
+abstract class a{
+abstract public void shape();
+
+
+}
+class rectangle extends a{
+  int dim1;
+  int dim2;
+  rectangle(int t,int p){
+    dim1=t;
+    dim2=p;
+  }
+  public void shape(){
+    int area=dim1*dim2;
+    System.out.println("rectangle area is"+area);
+  }
+}
+class circle extends a{
+  int dim1;
+  circle(int r){
+    dim1=r;
+  }
+  public void shape(){
+    double f=3.14;
+    double area=f*dim1*dim1;
+    System.out.println("circle area is"+area);
+  }
+}
+class triangle extends a{
+  int dim1;
+  int dim2;
+  triangle(int b,int h ){
+    dim1=b;
+    dim2=h;
+
+  }
+  public void shape(){
+    int area=dim1*dim2;
+    System.out.println("triangle area is"+area);
+  }
+}
+class test1{
+  a fig=new fig
+  a ref;
+  rectangle r=new rectangle(20,40);
+  circle c=new circle(20);
+  triangle t=new triangle(20,80);
+  public static void main(String args[]){
+    ref=r;
+    ref.shape();
+    ref=c;
+    ref.shape();
+    ref=t;
+    t.shape();
+  }
+}