C++中strrchr的使用示例有哪些

找到字符串中最后一个特定字符的位置：

#include <iostream>#include <cstring>int main() {    const char* str = "Hello, world!";    char ch = 'o';        const char* lastOccurrence = strrchr(str, ch);        if (lastOccurrence != NULL) {        std::cout << "Last occurrence of '" << ch << "' is at position " << lastOccurrence - str << std::endl;    } else {        std::cout << "Character '" << ch << "' not found in the string." << std::endl;    }        return 0;}

#include <iostream>#include <cstring>int main() {    const char* filePath = "C:\\Users\\user\\Documents\\file.txt";    const char* fileName = strrchr(filePath, '\\');        if (fileName != NULL) {        std::cout << "File name is: " << fileName + 1 << std::endl; // +1 to exclude the backslash    } else {        std::cout << "File name not found in the path." << std::endl;    }        return 0;}

这些示例展示了如何在C++中使用strrchr函数来查找字符串中最后一个特定字符的位置。