Question

How to display string as hexadecimal in C++

Answer 1

#include <iostream>
  
int main() {
    std::string s = "C++ Programming";
  
    for (const auto &ch : s) {
        std::cout << std::hex << int(ch) << " ";
    }
  
    return 0;
}
  
  
  
  
/*
run:
  
43 2b 2b 20 50 72 6f 67 72 61 6d 6d 69 6e 67 
  
*/

 

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Answer 2

#include <iostream>
#include <iomanip> 

int main() {
    std::string s = "C++ Programming";
    bool upper_case  = true;
 
    for (const auto &ch : s) {
        std::cout << std::hex << std::setfill(' ') << std::setw(3) << (upper_case ? std::uppercase : std::nouppercase) << (int)ch;
    }
 
    return 0;
}
 
 
 
 
/*
run:
 
 43 2B 2B 20 50 72 6F 67 72 61 6D 6D 69 6E 67
 
*/

 

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