Add program in different languages

3rd Sem/README.md

@@ -25,7 +25,121 @@
     d. Demonstrate Overflow and Underflow situations on Stack
     e. Display the status of Stack
     f. Exit
-    Support the program with appropriate functions for each of the above operations  
+    Support the program with appropriate functions for each of the above operations 
+    #include<stdio.h>
+#include<stdlib.h>
+#define MAX 5
+
+int s[MAX];
+int top = -1;
+
+void push(int item);
+int pop();
+void palindrome();
+void display();
+
+void main()
+{
+            int choice, item;
+            while(1)
+            {
+                        printf("\n\n\n\n~~~~~~Menu~~~~~~ : ");
+                        printf("\n=>1.Push an Element to Stack and Overflow demo ");
+                        printf("\n=>2.Pop an Element from Stack and Underflow demo");
+                        printf("\n=>3.Palindrome demo ");
+                        printf("\n=>4.Display ");
+                        printf("\n=>5.Exit");
+                        printf("\nEnter your choice: ");
+                        scanf("%d", &choice);
+                        switch(choice)
+                        {
+                                    case 1:             printf("\nEnter an element to be pushed: ");
+                                                            scanf("%d", &item);
+                                                            push(item);
+                                                            break;
+                                    case 2:             item = pop();
+                                                            if(item != -1)
+                                                                        printf("\nElement popped is: %d", item);
+                                                            break;
+                                    case 3:             palindrome();
+                                                            break;
+                                    case 4:             display();
+                                                            break;
+                                    case 5:             exit(1);
+                                    default:            printf("\nPlease enter valid choice ") ;
+                                                            break;
+                    }
+            }
+}
+
+void push(int item)
+{
+            if(top == MAX-1)
+            {
+                        printf("\n~~~~Stack overflow~~~~");
+                        return;
+            }
+
+            top = top + 1 ;
+            s[top] = item;
+}
+
+int pop()
+{
+            int item;
+            if(top == -1)
+            {
+                        printf("\n~~~~Stack underflow~~~~");
+                        return -1;
+            }
+            item = s[top];
+            top = top - 1;
+            return item;
+}
+
+void display()
+{
+            int i;
+            if(top == -1)
+            {
+                        printf("\n~~~~Stack is empty~~~~");
+                        return;
+            }
+            printf("\nStack elements are:\n ");
+            for(i=top; i>=0 ; i--)
+                        printf("| %d |\n", s[i]);
+}
+
+void palindrome()
+{
+            int flag=1,i;
+            printf("\nStack content are:\n");
+            for(i=top; i>=0 ; i--)
+                        printf("| %d |\n", s[i]);
+
+            printf("\nReverse of stack content are:\n");
+            for(i=0; i<=top; i++)
+                        printf("| %d |\n", s[i]);
+
+            for(i=0; i<=top/2; i++)
+            {
+                        if( s[i] != s[top-i] )
+                        {
+                                    flag = 0;
+                                    break;
+                        }
+            }
+            if(flag == 1)
+            {
+                        printf("\nIt is palindrome number");
+            }
+            else
+            {
+                        printf("\nIt is not a palindrome number");
+            }
+}
+
+
 #### Program-04 
     Design, Develop and Implement a Program in C for converting an Infix Expression to Postfix
     Expression. Program should support for both parenthesized and free parenthesized expressions with the