Summary  
This chapter covers how to manipulate strings using operations like slicing, concatenation, searching, replacing, and formatting to transform and analyze text. It provides practice exercises that apply built-in string methods and printing to demonstrate each concept.

General domain of usage  
Text processing

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

std::string censorComment(std::string comment, std::string forbiddenWord);

TEST_CASE("Censor 'stupid' in comment -> 'This movie is ***'", "[censorComment]") {
    std::string result = censorComment("This movie is stupid", "stupid");
    REQUIRE(result == "This movie is ***"); // Expected: "This movie is ***", input: "This movie is stupid"
}

TEST_CASE("Censor 'hate' in comment -> 'I *** bugs in code'", "[censorComment]") {
    std::string result = censorComment("I hate bugs in code", "hate");
    REQUIRE(result == "I *** bugs in code"); // Expected: "I *** bugs in code", input: "I hate bugs in code"
}

TEST_CASE("No censorship if word not present -> 'What a nice day'", "[censorComment]") {
    std::string result = censorComment("What a nice day", "bad");
    REQUIRE(result == "What a nice day"); // Expected: "What a nice day", input: "What a nice day"
}

TEST_CASE("Censor first occurrence only -> 'This is *** and bad again'", "[censorComment]") {
    std::string result = censorComment("This is bad and bad again", "bad");
    REQUIRE(result == "This is *** and bad again"); // Expected: "This is *** and bad again", input: "This is bad and bad again"
}

TEST_CASE("Censor word at start -> '*** code here'", "[censorComment]") {
    std::string result = censorComment("ugly code here", "ugly");
    REQUIRE(result == "*** code here"); // Expected: "*** code here", input: "ugly code here"
}

TEST_CASE("Censor word at end -> 'Code is ***'", "[censorComment]") {
    std::string result = censorComment("Code is ugly", "ugly");
    REQUIRE(result == "Code is ***"); // Expected: "Code is ***", input: "Code is ugly"
}

TEST_CASE("Empty comment -> ''", "[censorComment]") {
    std::string result = censorComment("", "bad");
    REQUIRE(result == ""); // Expected: "", input: ""
}

test.cpp

Developing a comprehensive understanding of data types is crucial when learning a programming language. This course offers an opportunity to delve deeper into data types in C++, gaining insights into how they are stored in memory. Additionally, the course covers the topic of type conversion.

short, int, long, float, double, etc. are all numerical data types. You will learn about all of them as well as the pitfalls they may conceal.

Challenge: String Manipulation Practice

解答