Question

How to convert an int number into a vector of int digits in C++

Answer 1

#include <algorithm>
#include <iostream>
#include <vector>

std::vector<int> convertToDigits(int number) {
    std::vector<int> digits;
    
    if (number < 0) {
        number = -number;
    }

    // Extract digits from the number
    while (number > 0) {
        digits.push_back(number % 10);
        number /= 10;
    }

    // Reverse the vector to get the correct order
    std::reverse(digits.begin(), digits.end());

    return digits;
}

int main() {
    int number = 12345;
    
    std::vector<int> digits = convertToDigits(number);

    for (int digit : digits) {
        std::cout << digit << " ";
    }
}

  
  
/*
run:
        
1 2 3 4 5 
   
*/

 

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