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        C++ cin char 逐个符号读取

        C++ cin char read symbol-by-symbol(C++ cin char 逐个符号读取)

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                  本文介绍了C++ cin char 逐个符号读取的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                  问题描述

                  我需要逐个符号阅读.但我不知道如何阅读,直到输入结束.例如,测试系统将 cin>>somecharvariable m 次.我必须逐个符号阅读所有字符.只有m次.我该怎么做?

                  I need to read symbol-by-symbol. But I don't know how to read until end of input. As exemple test system will cin>>somecharvariable m times. I have to read symbol-by-symbol all characters. Only m times. How I can do it?

                  推荐答案

                  如果您想逐个字符地格式化输入,请执行以下操作:

                  If you want formatted input character-by-character, do this:

                  char c;
                  while (infile >> c)
                  {
                    // process character c
                  }
                  

                  如果您想读取原始字节,请执行以下操作:

                  If you want to read raw bytes, do this:

                  char b;
                  while (infile.get(b))
                  // while(infile.read(&b, 1)   // alternative, compare and profile
                  {
                    // process byte b
                  }
                  

                  在任何一种情况下,infile 都应该是 std::istream & 或类似的类型,例如文件或 std::cin>.

                  In either case, infile should be of type std::istream & or similar, such as a file or std::cin.

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