具体的代码实现 展示一下

下面是使用Google Diff Match Patch库实现两个文本的差异比较的C++代码示例：

#include <iostream>
#include <string>
#include "diff_match_patch.h"

int main() {
    std::string text1 = "The quick brown fox jumps over the lazy dog.";
    std::string text2 = "The quick brown cat jumps over the lazy dog.";
    
    diff_match_patch dmp;
    std::list<diff_match_patch::Diff> diffs = dmp.diff_main(text1, text2, false);
    dmp.diff_cleanupSemantic(diffs);
    
    for (const auto& diff : diffs) {
        switch (diff.operation) {
            case diff_match_patch::DELETE:
                std::cout << "DELETE " << diff.text << std::endl;
                break;
            case diff_match_patch::INSERT:
                std::cout << "INSERT " << diff.text << std::endl;
                break;
            case diff_match_patch::EQUAL:
                std::cout << "EQUAL " << diff.text << std::endl;
                break;
        }
    }
    
    return 0;
}

上面的代码使用了Google Diff Match Patch库实现了两个文本的差异比较。它首先定义了两个文本`text1`和`text2`，然后使用`diff_match_patch`类的`diff_main()`方法计算它们之间的差异，并使用`diff_cleanupSemantic()`方法进行语义清理。最后，使用`for`循环遍历差异列表，并根据操作类型输出差异信息。运行上面的代码，将会输出如下结果：

EQUAL The quick brown 
DELETE fox 
INSERT cat 
EQUAL  jumps over the lazy dog.

这个结果告诉我们，在第一个文本中，字符串`fox`被删除了，而在第二个文本中，字符串`cat`被插入了。