查找字符数组长度 [英] Find length of char array

问题描述

我创造了code :: Blocks的（C ++很明显;）一个基于文本的刽子手游戏）。

I'm creating a text-based hangman game in Code::Blocks ( C++ Obviously ;) ).

所以，我创建了一个数组的char knownLetters [];但我不知道这个词有多长，我怎么能计算出有多少字符的出现将会在字符串中？

So i've created an array char knownLetters[]; but i'll have no idea how long the word will be, how can i calculate how many char's there will be in the string?

code：

#include <iostream>
#include <ctime>
#include <cstdlib>
using namespace std;

string GenerateWord() // Generate random word to be used.
{
        srand(time(NULL));
        int wordID = rand() % 21;
        string wordList[20] = {"Dog" ,"Cat","Lion","Ant","Cheetah","Alpaca","Dinosaur","Anteater","Shark","Fish","Worm","Lizard","Bee","Bird","Giraffe","Deer","Crocodile","Wife","Alligator","Yeti"};
        string word = wordList[wordID];
        return word;
    }
void PrintLetters() // Display the word including underscores
{
        string word = "";
        char knownLetters[word];
        for(int pos = 0; pos < word.length(); pos++) {
        if(knownLetters[pos] == word[pos]) cout << word[pos];
        else cout << "_";
}
    cout << "\n";

}
void PrintMan() // Display the Hangman to the User
{
    // To Be completed
}
void PlayerLose() // Check For Player Loss
{
    // To Be completed
}
void PlayerWin() // Check For Player Win
{
    // To Be completed
}

int main()
{
        cout << "Hello world!" << endl;
        return 0;
}

先谢谢了！

推荐答案

从随机字符串生成您使用尺寸方法找到它的大小

From the random string generated you use the size method to find its size

http://www.cplusplus.com/reference/string/string/size/

这可以被用于数组的大小或更好的使用载体，那么你并不需要担心的大小

This can then be used for the size of the array or better yet use a vector and then you do not need to worry about the size

void PrintLetters(const std::string& word) // Pass the word in here
{
    const int size = word.size();

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