Recently, when I used the CT ++ software, I encountered the following problem: the software was developed under FreeBSD. Although the C language source program is provided, the program compilation error occurs under Visual Studio 2003. The check reason is mainly because the source program is in UNIX format, and the carriage return character for each line is represented by a 0x0a character, while the carriage return character for each line in Windows/DOS is represented by a 0x0d0a character, this program is annotated in Russian, which affects the processing of vs2003 and treats a large number of program codes as annotations. Therefore, compilation fails. To pass the compilation, you must first convert the UNIX text format to the DOS format. The File menu of ultraedit provides the ability to convert a single file, but only one file can be converted at a time, which is troublesome. After some research, we finally found a method for batch conversion. Select the search | search in files menu in ue, and fill in ^ N in the find box, which indicates the line break symbol in the Unix File ), enter ^ P in Replace with, as shown in. This enables batch replacement.