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char ch;
cin >> ch;
ch += 'A' - 'a';
cout << ch ;
#include <iostream>
#include <cctype>
using namespace std;
int main()
{
char a = 'a';
cout << (char)toupper(a) << endl;
cout << (char)(a-32) << endl;
return 0;
}
#include <iostream>
using namespace std;
int main()
{
char a = 'a';
char b =(a & 0xDF);
cout<<b<<endl;
return 0;
}