Delete data from txt file
I need to delete data from txt file. My code is not working properly. Where am I making mistakes? I need to delete the person number from the file.
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int delete = 0;
ifstream readfile("person.txt");
ofstream writefile("person.tmp");
do
{
cout << "Delete data " << endl;
cout << "*****************" << endl;
cout << "data that needs to be deleted " << endl;
cin >> personnumber;
while (!readfile.eof())
{
readfile >> personnumber ;
if (delete == personnumber)
{
cout << "\n record \n";
cout << personnumber << endl;
}
else
{
writefile << personnumber << "\n";
}
}
writefile.close();
readfile.close();
remove("person.txt");
rename("person.tmp", "person.txt");
cout << "\n Will you do anything else(y)/(n)? "; cin >> answer;
} while (!(answer == 'n'));
cout << "success.";
break;
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Last edited on
You shouldn't name a variable like a keyword (delete).
On line 13 you overwrite the value from line 10. 'delete' is never changed. So only 0 would be removed.
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