#include <stdio.h>
#include <stdlib.h>
int main()
{
	int i;
	int sum=0;
	char ch;
	printf("请输入一串整数和任意含空格的数:");
	while(scanf("%d",&i)==1)
	{
		sum+=i;
		while((ch=getchar())==' ')
			;
		if(ch=='\n')
		{
			break;
		}
		ungetc(ch,stdin);   //
	}
	printf("结果是：%d\n",sum);
	return 0;


}

//OR
#include<iostream>
 using namespace std;
 int main ()
 {
 	int sum=0;
 	cout<<"请输入一串整数:";
 	int i;
 	while(cin>>i)
 	{
	 	sum+=i;
	 	while(cin.peek()==' ')
	 	{
	 		cin.get();
	 	}
	 	if(cin.peek()=='\n')
	 	{
	 		break;
	 	}
	 }
	 cout<<"结果是："<<sum<<endl;
	 return 0;
 }