下面的代码以PutObject方法为例，介绍如何使用进度条。

#include <alibabacloud/oss/OssClient.h>
using namespace AlibabaCloud::OSS;

void ProgressCallback(size_t increment, int64_t transfered, int64_t total, void* userData)
{
    std::cout << "ProgressCallback[" << userData << "] => " <<
    increment <<" ," << transfered << "," << total << std::endl;
}


int main(void)
{
    /* 初始化OSS账号信息 */
    std::string AccessKeyId = "yourAccessKeyId";
    std::string AccessKeySecret = "yourAccessKeySecret";
    std::string Endpoint = "yourEndpoint";
    std::string BucketName = "yourBucketName";
    std::string ObjectName = "yourObjectName";

    /* 初始化网络等资源 */
    InitializeSdk();

    ClientConfiguration conf;
    OssClient client(Endpoint, AccessKeyId, AccessKeySecret, conf);

    std::shared_ptr<std::iostream> content = std::make_shared<std::fstream>("yourLocalFilename", std::ios::in|std::ios::binary);
    PutObjectRequest request(BucketName, ObjectName, content);
  
    TransferProgress progressCallback = { ProgressCallback , nullptr };
    request.setTransferProgress(progressCallback);
   
    /* 上传文件 */
    auto outcome = client.PutObject(request);

    if (!outcome.isSuccess()) {
        /* 异常处理 */
        std::cout << "PutObject fail" <<
        ",code:" << outcome.error().Code() <<
        ",message:" << outcome.error().Message() <<
        ",requestId:" << outcome.error().RequestId() << std::endl;
        ShutdownSdk();
        return -1;
    }

    /* 释放网络等资源 */
    ShutdownSdk();
    return 0;
}