File Read/Write buffer lenght

tanarnelinistit

I have a file in which I write some names. lets say: Fiat, Ford, BMW. How can I open the file and read the entries one by one. eg: if only want to read Fiat and Ford then read only Fiat and Ford.

Naveen

if ur writing this name in seperate lines, u can use CStdioFile::ReadString()..

nave

_AnsHUMAN_

How are you trying to open a FILE? Using FILE * - fread(),fgetc(),fscanf(). CFile::Read(). CStdioFile::ReadString()- these classes have methods to read from the file.

Somethings seem HARD to do, until we know how to do them. ;-)_AnShUmAn_

tanarnelinistit

Thanks a lot it works using ReadString(). But how can I edit the file and replace Fiat with Mercedes, let's say?

Hamid Taebi

In additional you can use CFile m_file(m_Filename,CFile::modeRead); CArchive m(&m_file,CArchive::load); m.ReadString(str); ....

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WhiteSky

Naveen

tanarnelinistit wrote:

how can I edit the file and replace Fiat with Mercedes

this is a little bit difficult. here Mercedes have more characters than Fiat. U cannot insert character in a file in any place other that EOF. But replacing Fiat with a word of same character is possible. Move the file pointer to the begining of the word using CFile::Seek() function. then use CFile::Write() to replace it.

nave

David Crow

Read each of the lines from the "old" file into the "new" file up to the line that needs to be changed. Write the line into the "new" file. Read the remaining lines from the "old" file into the "new" file. Close both files. Delete the "old" file. Rename the "new" file. Make sense?

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