Question

fo d and ael Te of she ct Pr of te eWea wd t led ad The St ad.a wch i the a o a eped a p a d w bee sal ta oth of ype d The ct cag te e o od sal ta

Answer 1

#include <iostream>
#include<string>
#include <bits/stdc++.h>
using namespace std;
double iflation_rate(double last_year_pr,double this_year_pr)
{
   return (this_year_pr-last_year_pr)/last_year_pr;
}
bool isPrime(int n)   
{
   int i=2;
   for(;i*i<n;i++)
   {
       if(n%i==0)
return true;  
   }
   return false;
}
void add_tax(double tax,double &cost)
{
   cost+=tax;
}
int main()
{
cout<<iflation_rate(20.3,21.8)<<endl;
if(isPrime(4))
cout<<"is prime"<<endl;
double cost=12.3;
add_tax(5.4,cost);
cout<<"new cost= "<<cost<<endl;
}