Question

How can you make a string lowercase in c++? Please help.

Answer 1

You can iterate through all the characters in the string and turn them into their lowercase counterpart via std::tolower() as shown in this discussion.

#include <algorithm>
#include <cctype>
#include <string>

std::string data = "Abc";
std::transform(data.begin(), data.end(), data.begin(), [](unsigned char c){ return std::tolower(c); });

Comments

Can you tell me a shorter way to do it? It's gonna be hard to memorize this

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It's not a poem to memorize. You learn how logically commands and instructions are built up. Check out all the functions involves, such as std::transform, begin(), end(), etc.