#include <iostream>
using namespace std;
int main() {
// your code goes here
cout << (int)'A' << std::endl;
cout << (int)'a' << std::endl;
auto convertLowerCase = [](char c)
{
if (c > 'a') return c;
return (char)((c - 'A') + 'a');
};
cout << convertLowerCase('B') << std::endl;
return 0;
}
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