Question

How to Initialise byte array with decimal, octal and hexadecimal numbers in C++

Answer 1

#include <iostream>

int main()
{
    unsigned char arr1[] = {10, 20, 30, 40, 90}; // decimal values
    unsigned char arr2[] = {010, 077, 023, 034, 053};   // octal values 
    unsigned char arr3[] = {0x10, 0xAA, 0x67, 0xAB, 0xFF}; // hexadecimal values      

    int size = sizeof(arr1) / sizeof(arr1[0]);
     
    for (int i = 0; i < size; i++)
        std::cout << (int)arr1[i] << " ";
     
    std::cout << "\n";
 
    for (int i=0; i < size; i++)
        std::cout << std::oct << (int)arr2[i] << " ";
     
    std::cout << "\n";
     
    for (int i = 0; i < size; i++)
        std::cout << std::uppercase << std::hex << (int)arr3[i] << " ";
}
   
   
   
     
/*
run:
     
10 20 30 40 90 
10 77 23 34 53 
10 AA 67 AB FF 
  
*/

 

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