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886960a3c2
* Add cpplint to validate_filenames * Update and rename Happy_number.cpp to happy_number.cpp * Update validate_new_filenames.yml * pip install cpplint * python3 -m pip install cpplint * python3 -m pip install --useer cpplint * python3 -m pip install --user cpplint * Update validate_new_filenames.yml * sudo python3 -m pip install cpplint * sudo python3 -m pip install cpplint * uses: actions/setup-python@v1 * Run cpplint first * cpp_exts * tuple * cpplint_modified_files
29 lines
576 B
C++
29 lines
576 B
C++
/* A happy number is a number whose sum of digits is calculated until the sum is a single digit,
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and this sum turns out to be 1 */
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// Copyright 2019 TheAlgorithms contributors
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#include <iostream>
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int main() {
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int n, k, s = 0, d;
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std::cout << "Enter a number:";
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std::cin >> n;
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s = 0;
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k = n;
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while (k > 9) {
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while (k != 0) {
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d = k % 10;
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s += d;
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k /= 10;
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}
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k = s;
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s = 0;
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}
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if (k == 1)
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std::cout << n << " is a happy number" << std::endl;
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else
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std::cout << n << " is not a happy number" << std::endl;
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return 0;
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}
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