Question

目前我正在编写C ++小型游戏机游戏，我遇到了问题。问题的实质是我不能一个回一个循环。

这是我的代码：

#include <iostream>
#include <string>
#include <vector>
using namespace std;
int main() {
    Main:
    for (int i = 0; i < 200; i++) {
        vector <string> v;
        vector <char> v1;
        string word;
        cin >> word;
        char lastChar = word.at(word.length() - 1);
        cout << "Word's last character is:" << lastChar << endl;
        char firstChar1 = word[0];
        //v.push_back(word);
        if (i == 1) {
            v1.push_back(lastChar);
            v1.push_back(firstChar1);
        }
        string word1;
        cin >> word1;
        char firstChar = word1[0];
        cout << "Word's first character is:" << firstChar << endl;
        if (i==1) v1.push_back(firstChar);
        char lastChar1 = word1.at(word1.length() - 1);
        v1.push_back(lastChar1);
        //Checking:
            if (lastChar != firstChar) {
                cout << "Game stopped" << endl;
                //cout << "Your score is " << wordcounter << endl;
                break;
    }
}
    system("pause");
    return 0;
}

我希望用户必须输入以前一个单词的最后一个字母开头的单词，例如“deer”。然后，一个单词以“r”字母等开头。我的代码只适用于两个单词。当我输入第三个单词时，它再次启动循环并且没有查看前一个单词。

当前输出：

deer

Word's last character is:r

rabbit

Word's first character is:r

Ball

Word's last character is:l

当我输入球时，工作代码将写入游戏停止。但不幸的是，我的代码错了。

请帮助，

感谢。

Answer 1

如果if(lastChar != firstChar)失败，则应将lastChar设置为word1 lastChar，并在下一次迭代中进行检查。编辑的代码在这里：

#include <iostream>
#include <string>
#include <vector> 
using namespace std; 
int main() {
char lastChar;
for (int i = 0; i < 200; i++) {
    vector <string> v;
    vector <char> v1;
    string word;
    cin >> word;
    char firstChar1 = word[0];
    if (i >= 1){                //check in 2nd iteraion and so on iteration.
        if (lastChar != firstChar1)
            break;
    }
    lastChar = word.at(word.length() - 1);
    cout << "Word's last character is:" << lastChar << endl;

    //v.push_back(word);
    if (i == 1) {
        v1.push_back(lastChar);
        v1.push_back(firstChar1);
    }
    string word1;
    cin >> word1;
    char firstChar = word1[0];
    cout << "Word's first character is:" << firstChar << endl;
    if (i == 1) v1.push_back(firstChar);
    char lastChar1 = word1.at(word1.length() - 1);
    v1.push_back(lastChar1);
    //Checking:
    if (lastChar != firstChar) {
        break;
    }
       lastChar = word1.at(word1.length() - 1);    //new line added.
}
cout << "Game stopped" << endl;
//cout << "Your score is " << wordcounter << endl;
return 0;

}

循环回一个C ++

1 个答案: