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feat: Modify search/text_search.cpp (#1662)

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* Modified search/text_search.cpp

* Added tests

* Added a few test cases

* Added a few more test cases and documentation

* Minor fix

* Minor fixes

* Minor fixes

* Minor output fixes

* Minor output fixes

* Minor readability fixes

* clang-format and clang-tidy fixes for a01765a6

* Restored original settings

* clang-format and clang-tidy fixes for 6a8f3a4e

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
Co-authored-by: David Leal <halfpacho@gmail.com>
This commit is contained in:
Anuran Roy
2021-10-15 00:04:55 +05:30
committed by GitHub
parent 5a654fb85b
commit 85721be69b
5 changed files with 217 additions and 123 deletions
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72
search/text_search.cpp
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@@ -2,6 +2,7 @@
* \file
* \brief Search for words in a long textual paragraph.
*/
#include <cassert>
#include <cstdlib>
#include <iostream>
#ifdef _MSC_VER
@@ -10,9 +11,38 @@
#include <cstring>
#endif
/** Main function
/**
* @brief function to convert a C++ string to lower case
* @param word takes an std::string as input
* @returns std::string
*/
std::string lower(std::string word) {
int length = word.length();
std::string lc = "";
for (int i = 0; i < length; i++) {
lc += tolower(word[i]);
}
return lc;
}
/**
* @brief Self-test implementations
* @returns void
*/
static void test() {
assert(lower("abcd").compare("abcd") == 0);
assert(lower("abc").compare("abcd") == -1);
assert(lower("abcd").compare("abc") == 1);
}
/**
* @brief Main function
* @returns 0 on exit
*/
int main() {
test(); // run self-test implementations
std::string paragraph;
std::cout << "Please enter your paragraph: \n";
std::getline(std::cin, paragraph);
@@ -23,20 +53,46 @@ int main() {
if (paragraph.empty()) {
std::cout << "\nThe paragraph is empty" << std::endl;
} else {
int ch = 0;
while (true) {
std::string word;
std::cout << "Please enter the word you are searching for: ";
std::getline(std::cin, word);
std::cout << "Hello, your word is " << word << "!\n";
if (paragraph.find(word) == std::string::npos) {
std::cout << word << " does not exist in the sentence"
<< std::endl;
std::cout << "Ignore case-sensitive? 1 = Yes, 0 = No" << std::endl;
std::cin >> ch;
if (ch == 1) {
std::string lowerCase = lower(
paragraph); // convert std::string paragraph to lowercase
// and store it in std::string lowerCase
std::string lowerCaseWord =
lower(word); // convert std::string paragraph to lowercase
// and store it in std::string lowerCase
std::cout << "Hello, your word is " << word << "!\n";
if (lowerCase.find(lowerCaseWord) == std::string::npos) {
std::cout << word << " does not exist in the sentence"
<< std::endl;
} else {
std::cout << "The word " << word
<< " is now found at location "
<< lowerCase.find(lowerCaseWord) << std::endl
<< std::endl;
}
} else {
std::cout << "The word " << word << " is now found at location "
<< paragraph.find(word) << std::endl
<< std::endl;
std::cout << "Hello, your word is " << word << "!\n";
if (paragraph.find(word) == std::string::npos) {
std::cout << word << " does not exist in the sentence"
<< std::endl;
} else {
std::cout << "The word " << word
<< " is now found at location "
<< paragraph.find(word) << std::endl
<< std::endl;
}
}
std::cout << "\nPress Ctrl + C to exit the program.\n\n";
std::cin.get();
}
}
return 0;
}