我是一个完整的C++初学者,这种知识来自我尝试学习的其他语言。下面的代码是我正在尝试构建的莫尔斯码翻译器的一个函数,我很确定这甚至不是接近它的“好方法”。我的问题是,如何让程序查看用户输入的字符串,并将每个字母改为莫尔斯。如何检查字符串中的字母出现?
string ReplaceAll(std::string str, const std::string& from, const std::string& to){
size_t start_pos = 0;
while ((start_pos = str.find(from, start_pos)) != std::string::npos) {
str.replace(start_pos, from.length(), to);
start_pos += to.length(); // Handles case where 'to' is a substring of 'from'
}
return str;}
void Translate(string s) {
static string s2 = ReplaceAll(string(s), std::string("a"), std::string(".- "));
static string s3 = ReplaceAll(string(s2), std::string("b"), std::string("-... "));
static string s4 = ReplaceAll(string(s3), std::string("c"), std::string("-.-. "));
static string s5 = ReplaceAll(string(s4), std::string("d"), std::string("-.. "));
static string s6 = ReplaceAll(string(s5), std::string("e"), std::string(". "));
static string s7 = ReplaceAll(string(s6), std::string("f"), std::string("..-. "));
static string s8 = ReplaceAll(string(s7), std::string("g"), std::string("--. "));
static string s9 = ReplaceAll(string(s8), std::string("h"), std::string(".... "));
static string s10 = ReplaceAll(string(s9), std::string("i"), std::string(".. "));
static string s11 = ReplaceAll(string(s10), std::string("j"), std::string(".--- "));
static string s12 = ReplaceAll(string(s11), std::string("k"), std::string("-.- "));
static string s13 = ReplaceAll(string(s12), std::string("l"), std::string(".-.. "));
static string s14 = ReplaceAll(string(s13), std::string("m"), std::string("-- "));
static string s15 = ReplaceAll(string(s14), std::string("n"), std::string("-. "));
static string s16 = ReplaceAll(string(s15), std::string("o"), std::string("--- "));
static string s17 = ReplaceAll(string(s16), std::string("p"), std::string(".--. "));
static string s18 = ReplaceAll(string(s17), std::string("q"), std::string("--.- "));
static string s19 = ReplaceAll(string(s18), std::string("r"), std::string(".-. "));
static string s20 = ReplaceAll(string(s19), std::string("s"), std::string("... "));
static string s21 = ReplaceAll(string(s20), std::string("t"), std::string("- "));
static string s22 = ReplaceAll(string(s21), std::string("u"), std::string("..- "));
static string s23 = ReplaceAll(string(s22), std::string("v"), std::string("...- "));
static string s24 = ReplaceAll(string(s23), std::string("w"), std::string(".-- "));
static string s25 = ReplaceAll(string(s24), std::string("x"), std::string("-..- "));
static string s26 = ReplaceAll(string(s25), std::string("y"), std::string("-.-- "));
static string s27 = ReplaceAll(string(s26), std::string("z"), std::string("--.. "));
cout << s27 << endl;
}
制作将字母映射到其莫尔斯电码表示的字符和字符串的映射。创建某种缓冲区,例如一个'std :: stringstream'。迭代输入中的字符,并对每个字符在映射中查找并将相应的值写入缓冲区。用缓冲区做你想做的事情;把它变成一个字符串,打印出来等等。 – Biffen
你可能更想用一个'std :: map'来做到这一点。 –