Truncate or Append

Write a function void save(const string& filename, const string& text, bool append) that writes text followed by a newline to filename. When append is false the file is truncated first; when append is true the file is opened in append mode (ios::app).

Test 1 starts with a file containing the line old, then calls save(filename, "first", false) and then save(filename, "second", true), and prints every line of the file (see Expected Output).

Test 2 starts with a file containing the line kept and calls save(filename, "added", true):
kept
added

Do NOT write a main function.

Expected Output:

first↵
second↵
kept↵
added↵

= newline. The output ends with a newline — print one after the last line.

Hints4 available

Topics:

Streamsofstream

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Test Cases

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