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linux下sprintf_s函数的替代

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08/23
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error code:

char buf[];
sprintf_s(buf, , "predicted position:(%3d, %3d)", predict_pt.x, predict_pt.y);
cv::putText(image, buf, cv::Point(,), CV_FONT_HERSHEY_SCRIPT_COMPLEX, , cv::Scalar(,,), , );
sprintf_s(buf, , "current position :(%3d, %3d)", mousePosition.x, mousePosition.y);
cv::putText(image, buf, cv::Point(,), CV_FONT_HERSHEY_SCRIPT_COMPLEX, , cv::Scalar(,,), , );

error discription:

‘sprintf_s’ was not declared in this scope
sprintf_s(buf, , "predicted position:(%3d, %3d)", predict_pt.x, predict_pt.y);

windows平台下线程安全的格式化字符串函数sprint_s并非标准C函数，因此linux下无法使用，但可以使用snprintf函数代替。

right code:

char buf[];
snprintf(buf, , "predicted position:(%3d, %3d)", predict_pt.x, predict_pt.y);
cv::putText(image, buf, cv::Point(,), CV_FONT_HERSHEY_SCRIPT_COMPLEX, , cv::Scalar(,,), , );
snprintf(buf, , "current position :(%3d, %3d)", mousePosition.x, mousePosition.y);
cv::putText(image, buf, cv::Point(,), CV_FONT_HERSHEY_SCRIPT_COMPLEX, , cv::Scalar(,,), , );

Re:

1.linux下sprintf_s函数的替代;

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