diff --git a/C++/plus overloading b/C++/plus overloading
new file mode 100644
index 0000000..2888e71
--- /dev/null
+++ b/C++/plus overloading	
@@ -0,0 +1,88 @@
+#include<iostream>
+using namespace std;
+class box
+{
+    private:
+    double length,breadth,height;
+
+    public:
+    double getvolume()
+    {
+        return length*breadth*height;
+    }
+    void setlength(double l)
+    {
+        length=l;
+    }
+    void setbreadth(double b)
+    {
+        breadth=b;
+    }
+    void setheight(double h)
+    {
+        height=h;
+    }
+    box operator+(const box&b)
+    {
+        box box;
+        box.length=this->length+b.length;
+        box.breadth=this->breadth+b.breadth;
+        box.height=this->height+b.height;
+        return box;
+    }
+    box operator-(const box&m)
+    {
+        box box;
+        box.length=this->length-m.length;
+        box.breadth=this->breadth-m.breadth;
+        box.height=this->height-m.height;
+        return box;
+    }
+};
+int main()
+{
+    double vol1,vol2,vol3,vol4,vol5;
+    box box1;
+    box box2;
+    box box3;
+    box box4;
+    box box5;
+    box1.setlength(2.5);
+    box1.setbreadth(5.5);
+    box1.setheight(7.5);
+
+    box2.setlength(12.5);
+    box2.setbreadth(15.5);
+    box2.setheight(17.5);
+
+    box4.setlength(2.5);
+    box4.setbreadth(1.5);
+    box4.setheight(1.5);
+
+    vol1=box1.getvolume();
+    vol2=box2.getvolume();
+    vol4=box4.getvolume();
+    cout<<endl<<"box1 volume is "<<vol1<<endl;
+    cout<<"box2 volume is "<<vol2<<endl;
+    cout<<"box4 volume is "<<vol4<<endl;
+
+    box3=box1+box2+box4;
+    vol3=box3.getvolume();
+    box5=box2-box1;
+    vol5=box5.getvolume();
+    cout<<endl<<"overloads unuary + operator:"<<endl;
+    cout<<"box3 volume is "<<vol3<<endl; //box3=box1+box2+box4
+    cout<<endl<<"overloads unuary - operator:"<<endl;
+    cout<<"box5 volume is "<<vol5<<endl; //box5=box2-box1
+    
+    cout<<endl<<"overloads [] operator:"<<endl;
+    int intArray[1024];
+    for (int i = 0, j = 0; i < 1024; i++) 
+    {
+        intArray[i] = j++;
+    }
+    // 512
+    cout << intArray[512] << endl;
+    // 257
+    cout << 257 [intArray] << endl;
+}
diff --git a/c/stack b/c/stack
new file mode 100644
index 0000000..e0ea053
--- /dev/null
+++ b/c/stack
@@ -0,0 +1,84 @@
+#include<stdio.h>
+#define MAX 5
+int stack[MAX],top=-1;
+void push()
+{
+    int value;
+    if(top==MAX-1)
+    {
+        printf("\nstack is full\n");
+    }
+    else
+    {
+        printf("enter the value to push in the stack:");
+        scanf("%d",&value);
+        top++;
+        stack[top]=value;
+    }
+}
+void pop()
+{
+    if(top==-1)
+    {
+        printf("\nstack is empty\n");
+    }
+    else
+    {
+        printf("deleted element is %d",stack[top]);
+        top--;
+    }
+}
+void display()
+{
+    if(top>=0)
+    {
+        printf("stack elements:\n");
+        for(int i=top;i>=0;--i)
+        {
+            printf("%d\n",stack[i]);
+        }
+    }
+    else if(top==-1)
+    {
+        printf("\nstack is empty\n");
+    }
+}
+int main()
+{
+    int exit=0;
+    for(int x=0;x<=100;x++)
+    {
+        printf("\npress 1 to push the element in stack\n");
+        printf("press 2 to pop the element from stack\n");
+        printf("press 3 to display the elements\n");
+        printf("press 4 for exit\n");
+        printf("NOTE: max input 5\n");
+        int ch;
+        printf("enter your choice:");
+        scanf("%d",&ch);
+        switch (ch)
+        {
+            case 1:
+            push();
+            break;
+            case 2:
+            pop();
+            break;
+            case 3:
+            display();
+            break;
+            case 4:
+            printf("EXIT");
+            exit++;
+            break;
+            default:
+            printf("INVALID CHOICE");
+            break;
+        }
+        if(exit==1)
+        {
+            break;
+        }
+    }
+    return 0;
+}