linux c++ 时间戳转换

#include <iostream>
#include <ctime>

int main() {
    // 获取当前时间戳
    time_t now = time(nullptr);

    // 转换为本地时间
    struct tm *local_time = localtime(&now);

    // 格式化为字符串
    char buffer[80];
    strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", local_time);

    std::cout << "当前时间: " << buffer << std::endl;

    return 0;
}

#include <iostream>
#include <ctime>

int main() {
    // 获取当前时间戳
    time_t now = time(nullptr);

    // 转换为UTC时间
    struct tm *utc_time = gmtime(&now);

    // 格式化为字符串
    char buffer[80];
    strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", utc_time);

    std::cout << "当前UTC时间: " << buffer << std::endl;

    return 0;
}

#include <iostream>
#include <ctime>

int main() {
    const char *time_str = "2023-07-06 12:34:56";
    struct tm time_struct = {0};

    // 解析字符串时间
    strptime(time_str, "%Y-%m-%d %H:%M:%S", &time_struct);

    // 转换为时间戳
    time_t timestamp = mktime(&time_struct);

    std::cout << "时间戳: " << timestamp << std::endl;

    return 0;
}