c++ - 在Arduino上从字符串转换为char *

方法sprintf（）在Arduino上无效。我还能如何将字符串转换为char *？

 if(triggerNumber == 4)
 { currenttrack = 5;
 }
  sprintf(trackName, "track%03d.mp3", currenttrack);

  playMP3(trackName); //Go play XX.mp3

最佳答案

我相信，如果您包含stdio.h，snprintf将会起作用

snprintf(trackName, sizeof(trackName), "track%03d.mp3", currenttrack);