new file ex2_2.cpp added

ch02/ex2_2.cpp

@@ -0,0 +1,47 @@
+//AUTHOR YASH PARSANA
+//DATE 11-05-2021
+//CALCULATOR To calculate a mortgage payment
+
+#include<iostream>
+using std::cin;
+using std::cout; 
+using std::endl;
+
+float po(float r,int n)
+{
+    float ans=1;
+
+    for(int z=1;z<=n;z++)
+    {
+        ans*=r;
+    }
+    return ans;
+}
+int main()
+{
+    float p_amount,rate; // FLOAT TAKES HALF SPACE AS COMPARE TO DOUBLE AND HERE HAVE NO REQUIREMENT OF DOUBLE
+    int year; 
+
+    cout<<"Please Enter principal Amount : ";
+    cin>>p_amount;
+    cout<<endl<<"Please Enter rate of interest : ";
+    cin>>rate;
+    cout<<endl<<"Please Enter duration (in year) : ";
+    cin>>year;
+    cout<<endl;
+
+    int n=year*12;
+
+    rate=rate/1200;
+
+    float temp=po(1+rate,n);
+
+    float payment=(p_amount*rate*temp)/(temp-1);
+
+    cout<<"Your monthly payment is : "<<payment<<endl;
+
+
+
+
+    return 0;
+}