在C ++中从文件读取ASCII和二进制

Question

我该如何打开文件并读取一些固定的ASCII代码行（假定为n），然后从C ++中的n + 1行开始切换到从同一文件读取BINARY？

Answer 1

You can't change the mode without reopening because the fstream uses system calls to open files which in turn do not allow a mode change. You can use tellg / seekg to save and later restore the reading position, respectively.