c++ - Converting a string representing binary to a string representing equivalent hex -

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so have string x = "10101" , need put string y hex value of binary in x. if x="10101" y="0x15"

i don't want provide complete answer.

that said, basic idea should fill start of string 3 zero's can split string substrings length of 4. can turned hex variety of ways, easiest being using switch case statement. there 16 cases'


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