Question

How to find the numbers that are the sum of fourth powers of their digits in C++

Answer 1

#include <iostream>
#include <vector>
#include <cmath>

int sumOfFourthPowers(int n) {
    int sum = 0;
    int temp = n;
    
    while (temp > 0) {
        int digit = temp % 10;
        sum += std::pow(digit, 4);
        temp /= 10;
    }
    
    return sum;
}

int main() {
    std::vector<int> results;
    
    for (int i = 1000; i < 1000000; ++i) {
        if (i == sumOfFourthPowers(i)) {
            results.push_back(i);
        }
    }

    for (int num : results) {
        std::cout << num << std::endl;
    }
}

 
 
/*
run:
 
1634
8208
9474
 
*/

 

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