ex07-06.cpp

来自「数据结构常用算法合集」· C++ 代码 · 共 18 行

//EX07-06.cpp
#include <iostream.h>	//cout,cin
#include <conio.h>		// getch()
unsigned long sum_num(unsigned long);
void main()
{ unsigned long n;
  cout << "n=";
  cin >> n;
  cout <<"sum="<<sum_num(n);
  getch();
}
unsigned long sum_num(unsigned long n)
{ unsigned long sum;
  if (n>0)
  sum = n % 10 + sum_num(n/10);
  return sum;
}