C++ 如何使用 stringstream 分隔逗号分隔的字符串
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How to use stringstream to separate comma separated strings
提问by Meysam
I've got the following code:
我有以下代码：
std::string str = "abc def,ghi";
std::stringstream ss(str);
string token;
while (ss >> token)
{
printf("%s\n", token.c_str());
}
The output is:
输出是：
abc
def,ghi
abc
def,ghi
So the stringstream::>>operator can separate strings by space but not by comma. Is there anyway to modify the above code so that I can get the following result?
所以stringstream::>>操作符可以用空格分隔字符串，但不能用逗号分隔。无论如何修改上面的代码，以便我可以获得以下结果？
input: "abc,def,ghi"
output:
abc
def
ghi
输入：“abc，def，ghi”
输出：
abc
def
ghi
回答by jrok
#include <iostream>
#include <sstream>
std::string input = "abc,def,ghi";
std::istringstream ss(input);
std::string token;
while(std::getline(ss, token, ',')) {
std::cout << token << '\n';
}
abc
def
ghi
abc
def
ghi
回答by Kish
#include <iostream>
#include <string>
#include <sstream>
using namespace std;
int main()
{
std::string input = "abc,def, ghi";
std::istringstream ss(input);
std::string token;
size_t pos=-1;
while(ss>>token) {
while ((pos=token.rfind(',')) != std::string::npos) {
token.erase(pos, 1);
}
std::cout << token << '\n';
}
}
