Summary  
This chapter covers defining a function that takes input parameters and uses arithmetic operations and conditional logic to calculate a result.

General domain of usage  
E-commerce order processing

#define CATCH_CONFIG_MAIN
#include <catch2/catch.hpp>
#include <iostream>

float calculateShipping(float weight, float productPrice, int option);

TEST_CASE("Shipping for weight > 25, option 1, productPrice 21.99 => 4.749", "[calculateShipping]") {
    REQUIRE(calculateShipping(27.6f, 21.99f, 1) == Approx(4.749f));
}

TEST_CASE("Shipping for weight > 25, option 2, productPrice 21.99 => 4.949", "[calculateShipping]") {
    REQUIRE(calculateShipping(27.6f, 21.99f, 2) == Approx(4.949f));
}

TEST_CASE("Shipping for weight > 25, option 3, productPrice 21.99 => 6.199", "[calculateShipping]") {
    REQUIRE(calculateShipping(27.6f, 21.99f, 3) == Approx(6.199f));
}

TEST_CASE("Shipping for weight <= 25, any option, productPrice 21.99 => 2.199", "[calculateShipping]") {
    REQUIRE(calculateShipping(20.0f, 21.99f, 2) == Approx(2.199f));
}

TEST_CASE("Shipping for weight > 25, invalid option, productPrice 21.99 => 4.449", "[calculateShipping]") {
    REQUIRE(calculateShipping(27.6f, 21.99f, 99) == Approx(4.449f));
}

test.cpp

Welcome to a beginner-friendly course that will help you learn the core concepts of conditional statements . Whether you're new to programming or looking to improve your understanding of conditional statements and how they influence the flow of your programs, this course is designed to meet your needs.

This is your gateway to understanding the fundamental building blocks of decision making. Gain the essential knowledge to make your programs more intelligent and responsive.

Apply and reinforce your knowledge of conditional flow control concepts. You will be presented with a series of engaging programming challenges to test and expand your knowledge.

Take your skills to the next level by exploring and learning advanced features and techniques to deepen your understanding and strengthen your knowledge.

Challenge: Calculate Shipping Cost

Solution

Awesome!

Challenge: Calculate Shipping Cost

Solution