Total cost

A family consists of x members. You are given the task to book flight tickets for these 

$x$ members.
You are given the following information about the airline in which you have to book the tickets:

• $P$: It denotes the cost of one ticket of the flight.
• $S$: It denotes the number of total available seats in the flight.
• $T$: If the numbers of available seats are less than or equal to $T$, then the cost of the flight ticket increases to $H$.
• $H$: It denotes the new hiked cost.

Determine the total cost to book the tickets for all the family members.

Note: The tickets are booked one by one for all the family members.

Example:

Input:  p = 6000 , s = 10,  t= 5, h = 6500, x=  7
Output: 43000

Approach

C++

#include <bits/stdc++.h>
using namespace std;

long long totalCost(long long p, long long s, 
   long long t, long long h, long long x)
{

    long long cost = 0, cnt = 0;
    while (s > t)
    {
        cost += p;
        s--;
        cnt++;
        if (cnt == x)
            break;
    }
    if (cnt < x)
        cost += (x - cnt) * h;
    return cost;
}
int main()
{
    long long p = 6000, s = 10, t = 5, h = 6500, x = 7;

    cout << totalCost(p, s, t, h, x) << "\n";

    return 0;
}