how can i change the data of my text file with the user input? eg. i prompt for user to enter new no. and with this new number it will replace the old number with the new one. i know i need to wite to the file but how can i replace my old number wif the new entered number?
this is how my file looks like:
username:phone_number:idOpen the file with fstream, search for the line with the id you wish to edit, then write to that line. A nice reference can be found at http://www.cplusplus.com/reference/iostream/fstream/
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