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用C ++将文件的一行写入两个不同的数组

[英]writing a single line of a file in C++ into two different arrays

原文 2010-05-04 15:36:50 3 1 c++

suppose a text file has 11001100 11001101 假设一个文本文件具有11001100 11001101

and i open the text file and take the input from the file as pt[0]=11001100, pt[1]=11001101.. 我打开文本文件，并从文件中输入pt [0] = 11001100，pt [1] = 11001101。

but if i take the input from file as in>>pt it wont put it in two different arrays which is obvious but it takes the whole line . 但是如果我从>> pt中获取文件的输入，它将不会将其放置在两个不同的数组中，这很明显，但它占用了整行。 Thus I have to take another for loop and traverse through the whole string and when I find a null character i start putting into the second array . 因此，我必须进行另一个for循环并遍历整个字符串，当我发现一个空字符时，我便开始放入第二个数组。 But how can I do it without putting it into a variable and traversing .. I mean directly from the file itself .. 但是我怎么做而不将其放入变量并遍历..我的意思是直接从文件本身..

1 个解决方案

Read it one byte at a time (eg with fread()). 一次读取一个字节（例如，使用fread（））。 Append each byte to pt[i], where i is incremented when a space is encountered. 将每个字节追加到pt [i]，遇到空间时i在其中递增。

从 C++ 中的多行文件中读取不同长度的 arrays - Read arrays of different length from multiple line file in C++

在C ++中同时读取和写入两个不同文件的文件流 - Reading and writing file streams simultaneously for two different files in C++

从C ++中的不同线程写入文件 - Writing file from different threads in C++

用C ++在不同的文件中编写类 - Writing classes in different file in c++

如何从 c++ 中的文本文件将整数（每行两个）读入单独的 arrays - how to read integers (two per line) into separate arrays from a text file in c++

C++ Arrays 和值的写入 - C++ Arrays and writing of values

C ++从文本文件中查找一行并更新/写入该行 - C++ Finding a line from a text file and updating/writing the line

如何在 c++ 的单行（水平）中打印两个文件的数据？如给定的。这两个 forms 来自两个不同的文本文件 - How to print data from two files in a single line (horizontal) in c++ ? As given. These two forms are from two different text files

将文本文件的交替行分成两个不同但对应的数组C ++ - Separating alternating lines of a text file into two different but corresponding arrays C++

将文本文件逐行读取到并行数组C ++ - Reading text file line by line into parallel arrays C++

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相关问题 从 C++ 中的多行文件中读取不同长度的 arrays - Read arrays of different length from multiple line file in C++ 在C ++中同时读取和写入两个不同文件的文件流 - Reading and writing file streams simultaneously for two different files in C++ 从C ++中的不同线程写入文件 - Writing file from different threads in C++ 用C ++在不同的文件中编写类 - Writing classes in different file in c++ 如何从 c++ 中的文本文件将整数（每行两个）读入单独的 arrays - how to read integers (two per line) into separate arrays from a text file in c++ C++ Arrays 和值的写入 - C++ Arrays and writing of values C ++从文本文件中查找一行并更新/写入该行 - C++ Finding a line from a text file and updating/writing the line 如何在 c++ 的单行（水平）中打印两个文件的数据？如给定的。这两个 forms 来自两个不同的文本文件 - How to print data from two files in a single line (horizontal) in c++ ? As given. These two forms are from two different text files 将文本文件的交替行分成两个不同但对应的数组C ++ - Separating alternating lines of a text file into two different but corresponding arrays C++ 将文本文件逐行读取到并行数组C ++ - Reading text file line by line into parallel arrays C++

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