字符串的分割

stringstream

#include<bits/stdc++.h>
using namespace std;
int main()
{
	//1,2,3,4,5
	//如何分割逗号间隔的字符串
	string str;
	getline(cin,str);
	stringstream ss(str);
	string str_num;
	vector<int> vec;
	while(getline(ss,str_num,','))
	{
		vec.push_back(stoi(str_num));
	}
	for(int i=0; i<vec.size(); i++)
	{
		cout<<vec[i]<<" ";
	}

	return 0;
}

find & substr

#include<bits/stdc++.h>
using namespace std;
int main()
{
	//1,2,3,4,5
	//如何分割逗号间隔的字符串
	string str;
	getline(cin,str);
	str+=",";
	vector<int> vec;
	while(str.find(',')!=-1)
	{
		int pos=str.find(',');
		vec.push_back(stoi(str.substr(0,pos)));
		str=str.substr(pos+1);
	}
	for(int i=0; i<vec.size(); i++)
	cout<<vec[i]<<" ";
	cout<<endl;


	return 0;
}