Question

I am taking a beginning C++ class, and would like to convert letters between hex representations and binary. I can manage to print out the hex numbers using:

for(char c = 'a'; c <= 'z'; c++){     cout << hex << (int)c; } 

But I can’t do the same for binary. There is no std::bin that I can use to convert the decimal numbers to binary.

Answer 1

Like so:

for(char c = 'a'; c <= 'z'; c++){         std::bitset<sizeof(char) * CHAR_BIT> binary(c); //sizeof() returns bytes, not bits!         std::cout << 'Letter: ' << c << '\t';         std::cout << 'Hex: ' << std::hex << (int)c << '\t';         std::cout << 'Binary: ' << binary << std::endl;     }