Calculating the price of the transport

After having done that, now we can start calculating the price of the transport. The constraints in the task refer to the distance that the student wants to travel. This is why, we will use an if-else construction that will help us find the price of the transport, depending on the given kilometers.

First, we check whether the kilometers are less than 20, as the task specifies that the student can only use a taxi for less than 20 kilometers. If the condition is true (returns true), the variable that is created to store the value of the price of the transport (price), will store the corresponding value. This value equals to the starting fee that we sum with its rate, multiplied by the distance, which the student has to travel.

If the condition of the variable is not true (returns false), the next step of our program is to check whether the kilometers are less than 100. We do that because the task specifies that in this range, a bus can be used as well. The price per kilometer of a bus is cheaper than a taxi one. Therefore, if the result of the condition is true, we store a value, equal to the result of the multiplication of the rate of the bus by the distance to the variable for the price of the transport in the else if construction body.

If this condition does not return true as a result, we have to store a value, equal to the result of the multiplication of the distance by the train rate to the price variable in the else body. This is done because the train is the cheapest transport for the given distance.

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