Question

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

Answer 1

#include <stdio.h>

int sum_of_fourth_powers(int n) {
    int sum = 0;
    int temp = n;
    
    while (temp > 0) {
        int digit = temp % 10;
        sum += digit * digit * digit * digit; 
        temp /= 10;
    }
    
    return sum;
}

int main() {
    for (int i = 1000; i < 1000000; ++i) {
        if (i == sum_of_fourth_powers(i)) {
            printf("%d\n", i);
        }
    }
    
    return 0;
}



/*
run:

1634
8208
9474

*/

 

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