Bit manipulation / Bit Manipulation Application Small to Capital Letter / Essential C++

#include <cstdio>

int main()
{
    char op1 = 'a';  // "a" letter (i.e. small case)
    int mask = 0xDF; // choosing a proper mask

    printf("a (AND) mask = A\n");
    printf("%c   &   0xDF = %c\n", op1, op1 & mask);
    
    return 0;
}

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Bit manipulation / Bit Manipulation Application Small to Capital Letter / Essential C++

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