Java 错误：无法从for循环中找到符号

因此，我的代码试图找出一个字符串是否与另一个目标字符串（目标已定义）相似。它根据两个字符串中有多少字母相似来评分。然而，在我的for循环中，我得到了一个用于定义tChar的m的找不到符号错误，但是它被用来定义iChar。。。我很困惑。有更好的方法吗

public int score(String input){
    int score;
    char iChar, tChar;
    for (int m=0;m<input.length();++m)
        iChar = input.charAt(m);
        tChar = target.charAt(m);
        if (iChar == tChar)
            score = score + 1;
        else
            score = score;
    return score;
}

公共整数分数（字符串输入）{
智力得分；
查伊查尔，特查尔；
for（int m=0；m您需要在for循环周围放置大括号。此时for循环正在反复执行iChar行，然后当它退出并到达tChar行时，变量m超出范围，因此无法找到

修复后的代码如下所示

public int score(String input) {
    int score = 0; //i know java instantiates variables for you, but if you do it explicitly, it serves to document your code.
    char iChar, tChar;
    for (int m = 0; m < input.length(); m++) {
        iChar = input.charAt(m);
        tChar = target.charAt(m);
        if (iChar == tChar) score++; //abbreviated and else clause removed, as it was doing nothing.
    }
    return score;
}

公共整数分数（字符串输入）{
int score=0；//我知道java会为您实例化变量，但如果您显式地这样做，它将用于记录代码。
查伊查尔，特查尔；
对于（int m=0；m
我没有想到……谢谢！
for (int m=0;m<input.length();++m)  // Now m is block scoped
{
        iChar = input.charAt(m);
        tChar = target.charAt(m);
        if (iChar == tChar)
            score = score + 1;
        else
            score = score;   // I don't see any use of else at all
}

public int score(String input) {
    int score = 0; //i know java instantiates variables for you, but if you do it explicitly, it serves to document your code.
    char iChar, tChar;
    for (int m = 0; m < input.length(); m++) {
        iChar = input.charAt(m);
        tChar = target.charAt(m);
        if (iChar == tChar) score++; //abbreviated and else clause removed, as it was doing nothing.
    }
    return score;
}