25 lines
636 B
C++
25 lines
636 B
C++
#include "cpp_headers/fcpp.hh"
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int main() {
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int n = enter_int("Please enter a natural number: ");
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// search smallest factor, start with smallest possible: 2
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int k=2;
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// go until sqrt(n)
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while (k <= sqrt(n)) {
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// k is factor of n
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if (n % k == 0) {
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// print out the factor k
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print(k);
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// reset n to the quotient
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n = n / k;
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// restart at k=2
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k = 2;
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} else {
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// if k is not a factor, check next one
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k++;
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}
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}
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// n is the last prime factor of the original input number
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print(n);
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}
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