ios::??
closed account (9wX36Up4)
hey guys simply my question is what is the different between ios::ate and ios::trunc
both clearing the file??
both clearing the file??
Last edited on
ios::ate means you can append to the file from any position you specify within the file. So if you do not specify the position of the file to be written too, it will act like ios::trunc.
ios::trunc ( truncate ) just means it starts the file fresh as if it was empty. So what most people do is read the file in as a buffer .. change it.. and then write it all back out to the file.
In simpler terms :
trunc > Truncate existing file (default behavior)
ate > Opens the file without truncating, but allows data to be written anywhere in the file.
ios::trunc ( truncate ) just means it starts the file fresh as if it was empty. So what most people do is read the file in as a buffer .. change it.. and then write it all back out to the file.
In simpler terms :
trunc > Truncate existing file (default behavior)
ate > Opens the file without truncating, but allows data to be written anywhere in the file.
Last edited on
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