qq_48288251的博客

package file; import java.io.File; import java.io.IOException; import java.util.*; public class file1 { public static void main(String[] args){ File f = new File("e:\\1.txt"); if(f.exists()){ //判断文件是否存在 f.delete(); //删除文

输入带有—的字符c scanf("%d:%d",&hh, &mm); if( (0<=hh && hh<=11) || (hh == 12 && mm == 0)) printf(“Only %02d:%02d. Too early to Dang.\n”, hh, mm); 输入带有—的字符java,截取一个字符串 String s = input.nextLine(); String year = s.substring(6,10); Str