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  1. //实验3.4
  2. #include <iostream>
  3. using namespace std;
  4.  
  5. int main() {
  6.     int a;
  7.     cout << "请输入一个整数: ";
  8.     cin >> a;
  9.  
  10.     int b = 0;
  11.     while (a!= 0) {
  12.         b += a % 10;
  13.         a /= 10;
  14.     }
  15.  
  16.     cout << "各位数字之和为: " << b << endl;
  17.     return 0;
  18. }
  19.  
Success #stdin #stdout 0.01s 5288KB
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请输入一个整数: 各位数字之和为: 16
https://ideone.com/85bX89
language:
C++ (gcc 8.3)
created:
11 days ago
visibility:
public

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