Question

How to convert decimal to binary in C++

Answer 1

#include <iostream>

int main(void) {
    int dec = 253, bin[16], i = 0;

    while(dec != 0) {
        bin[i] = dec % 2;
        i++;
        dec /= 2;
    }
    for(i = i - 1; i >= 0; i--)
        std::cout << bin[i];
        
    return 0;        
}



  
/*
run:
   
11111101
   
*/

 

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Answer 2

#include <iostream>
#include <bitset>

int main(void) {
    std::string binary = std::bitset<16>(253).to_string(); 
    
    std::cout << binary;

    return 0;        
}



  
/*
run:
   
0000000011111101
   
*/

 

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