pass by value and pass by ref

passbyValueRefrance.cpp

@@ -0,0 +1,53 @@
+#include<iostream>
+#include<cmath>
+using namespace std;
+void  fun(int *x)			//pointer
+{
+	cout<<"The orignal value of  x is:"<<*x<<endl;
+}
+
+void swap(int x,int y)
+{
+	int temp=0;
+	temp=x;
+	x=y;
+	y=temp;
+}
+void SwapbyRef(int &x,int &y)		//it take value as a refrence mean orignal value...
+{
+	int temp=x;
+	x=y;
+	y=temp;
+
+}
+int main()
+{
+	//pass by value mean pass by copy we pass the copy of actual value
+	int x=30;
+	int y=70;
+
+	fun(&x);
+
+	swap(x,y);
+	cout<<"The value of X is:"<<x<<endl;
+	cout<<"The value of Y is:"<<y<<endl;
+
+	int ref1=9;
+	int ref2=1;
+
+	SwapbyRef(ref1,ref2);
+
+	cout<<"The value ref1 and ref2 is:"<<ref1<<" "<<ref2<<endl;
+
+	// pass by referance in that we pass our orignal paramter. rather then copy
+
+	int a=10;
+	int &b=a;
+	cout<<"The value of A and B is:"<<a<<" "<<b<<endl;
+	b=77;
+	cout<<"The value of A and B is:"<<a<<" "<<b<<endl;
+
+
+
+
+}