How do i scan line and extract integers and strings containing whitespaces - c++

Question

I have a file with following lines:
51:HD L80 Phone:78
22:Nokia Phone:91
I need to split these into 3 separate variables
(int, string, int)
int id = line[0]
string phoneName = line[1]
int price = line [2]
I have tried many solutions for example:
std::ifstream filein("records");
for (std::string line; std::getline(filein, line); )
{
// std::cout << line << std::endl;
std::istringstream iss (line);
std::string word;
std::vector<string> tempString;
while(std::getline(iss,word,',')){
tempString.push_back(word);
// std::cout << word << "\n";
}
However in this example I do get the values but they are coming in a stream and not in one go. I do not want to save them into vector (no other way to store the incoming values) but call a function immediately after getting all the 3 values.
SOLUTION
This is a modification of the accepted answer:
`for (std::string line; std::getline(filein, line); )
{
// std::cout << line << std::endl;
std::istringstream iss (line);
for (int stockID; iss >> stockID; )
{
char eater;
iss >> eater; // this gets rid of the : after reading the first int
std::string stockName;
std::getline(iss, stockName, ':'); // reads to the next :, tosses it out and stores the rest in word
std::string catagory;
std::getline(iss, catagory, ':'); // reads to the next :, tosses it out and stores the rest in word
std::string subCatagory;
std::getline(iss, subCatagory, ':');
int stockPrice;
iss >> stockPrice;
iss >> eater; // this gets rid of the : after reading the first int
int stockQTY;
iss >> stockQTY; // get the last int
// iss >> eater;
// std::cout << stockName << "\n";
Record recordd = Record(stockID,stockName,catagory,subCatagory,stockPrice,stockQTY);
record.push_back(recordd);
}
}`
for when text file contains:
51:HD L80 Phone:Mobile:Samsung:480:40
22:Nokia Phone:Mobile:Nokia:380:200

Answer 1

There is no reason to use a std::stringstream here if you know you are going to have exactly 3 columns in every row. Instead you can read those values directly from the file, store them in temporaries, and then call the function with those temporary variables.
for (int a; filein >> a; )
{
char eater;
filein >> eater; // this gets rid of the : after reading the first int
std::string word;
std::getline(filein, word, ':'); // reads to the next :, tosses it out and stores the rest in word
int b;
filein >> b; // get the last int
function_to_call(a, word, b);
}

Answer 2

You can find different ways to split a string here:
https://www.fluentcpp.com/2017/04/21/how-to-split-a-string-in-c/
Example:
std::vector<std::string> split(const std::string& s, char delimiter)
{
std::vector<std::string> tokens;
std::string token;
std::istringstream tokenStream(s);
while (std::getline(tokenStream, token, delimiter))
{
tokens.push_back(token);
}
return tokens;
}