C++ how do i show result that start with Letter e.g A only
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C++ how do i show result that start with Letter e.g A only

I have a list.txt

it contains about 100 records, but if user cin a letter e.g A

i just want show all record contain A in the loop

record is recorded in line break format, in shell commadn we use A*, but if in c++ , how do we do it 

Example:
Alfred<br>
Alpha<br>
Augustine<br>
Bravo<br>
Charlie<br>
Delta