nie-ii-year

commit ccafde8142524a448c77cd229d1c2657fa2d1fca
parent b3d9cc1e76058f6ab5b5ca512c883611f4766fd1
Author: Agastya Chandrakant <acagastya@outlook.com>
Date:   Fri,  3 Nov 2017 10:36:00 +0530

let's see
Diffstat:
A
s3/oops/tq2.cpp
 | 
63
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 63 insertions(+), 0 deletions(-)
diff --git a/s3/oops/tq2.cpp b/s3/oops/tq2.cpp
@@ -0,0 +1,63 @@
+#include <iostream>
+#define MAX 5
+
+int read = -1;
+int write = -1;
+
+class queue{
+template <class T>
+  T data[MAX];
+public:
+template <class T>
+  void inQueue(){
+    T incoming;
+    if(write == MAX - 1){
+      std::cout << "Queue overflow\n";
+      return;
+    }
+    if(read == -1)
+      ++read;
+    std::cout << "Enter element to be entered: ";
+    std::cin >> incoming;
+    write = (write + 1);
+    data[write] = incoming;
+  };
+  template <class T>
+  void deQueue(){
+    if(read == -1 || read > write)
+      std::cout << "Queue underflow.\n";
+    else{
+      std::cout << data[read] << " has been removed.\n";
+      read++;
+    }
+  };
+  template <class T>
+  void displayQueue(){
+    if(write == -1 || read > write)
+      std::cout <<"Queue is empty.\n";
+    else{
+      for(int i = read; i <= write; i++)
+        std::cout << data[i] << " ";
+      std::cout << "\n";
+    }
+  };
+};
+
+int main() {
+    int choice;
+    queue <int> q;
+    do{
+      std::cout << "Enter choice: ";
+      std::cin >> choice;
+      switch (choice) {
+        case 1: q.inQueue();
+                q.displayQueue();
+                break;
+        case 2: q.deQueue();
+                q.displayQueue();
+                break;
+        default: choice = 0;
+      }
+    }while(choice);
+  return 0;
+}