C语言 scanf输入多个数字只能以逗号分隔的操作

#include <stdio.h>
int main()
 {
 int num_max(int x,int y,int z);
 int a,b,c,max;
 scanf("%d,%d,%d",&a,&b,&c);
 max=num_max(a,b,c);
 printf("max=%d",max);
 return 0;
 }
int num_max(int x,int y,int z)
 {
 int max=z;
 if(max<x)max=x;
 if(max<y)max=y;
 return(max);
 }

// cin,.cpp : Defines the entry point for the console application.
//
 
#include "stdafx.h"
#include "iostream"
#include <string>
#include <sstream>
using namespace std; 
 
int _tmain(int argc, _TCHAR* argv[])
{
 string strTemp;
 int array[4];
 int i = 0;
 stringstream sStream;
 
 cin >> strTemp;
 int pos = strTemp.find(',');
 while (pos != string::npos)
 {
 strTemp = strTemp.replace(pos, 1, 1, ' '); //将字符串中的','用空格代替
 pos = strTemp.find(',');
 }
 
 sStream << strTemp; //将字符串导入的流中
 while (sStream)
 {
 sStream >> array[i++];
 }
 
 for (int i = 0; i < 4; i++)
 {
 cout << array[i] << " ";
 }
 cout << endl;
 return 0;
}