Tag: beginner
All the articles with the tag "beginner".
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How to Replace a Substring in a C++ String
Updated:Replace text inside a C++ string: replace one occurrence, replace all occurrences with a loop, and use std::string::replace by position. Copy-paste code included.
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How to Check if a String Is a Number in C++
Check whether a C++ string is a valid number using stoi with exceptions, stringstream, or from_chars. Handles negatives, decimals and trailing junk correctly.
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C++ String Length: size() vs length() vs strlen()
Get the length of a string in C++. Why size() and length() are identical, when to use strlen for char arrays, and the signed-unsigned trap that breaks loops.
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How to Convert String to int in C++: stoi, atoi, and stringstream
Updated:Learn how to convert a string to int in C++ using stoi, atoi, and stringstream. Includes error handling, examples, and when to use each method safely.