Read data from text file

[Messzir]

The task is to read data from file.
sms.txt structure:
first line: hour minute phonenumber
second line: message

#include <iostream>
#include <string>
#include <vector>
#include <fstream>

using namespace std;

struct TSMS{
    int hour,minute,phonenumber;
    string message;
};

int main(){
    vector<TSMS> messages;
    TSMS puffer;
    ifstream in("sms.txt");
    if(in.is_open()){
        in >> puffer.hour >> puffer.minute >> puffer.phonenumber;
        cout << puffer.hour << ":" << puffer.minute << " @ " << puffer.phonenumber << endl;
        getline(in,puffer.message);
        cout << puffer.message << endl;
        in.close();
    }else cout << "404";
    return 0;
}

The problem is it does not read puffer.message. What do you think about it?

[MiiNiPaa]

Filestream before reading:

hour minute phonenumber
message

Filestream after Line 18:

//There is newline symbol
message

Line 20 reads whatever left from first line and discards newline (effectively reads empty string)

[Messzir]

Thanks for your answer! I supposed it could be a "new line symbol" problem, but I can not solve it. What would you modify in code? Or should I read hour,minute,phonenumber with getline (if possible) also?

[MiiNiPaa]

#include <limits>
/*...*/
std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');

Betweenline 18 and 20

[Messzir]

Please don't misunderstand me, thanks, but I would be greatful if there would be a friendlier solution... :)

[MiiNiPaa]

This line skips all symbols before and with first encountered newline symbol.
You can use just std::cin.ignore(100, '\n'); if you can be sure that there won't be more than 99 whitespace characters at the end of first line.

If you want to rewrite program using getline, there is two ways:
a) Get the whole first string, assign it to the stringstream and get values from it

#include <sstream>
/*...*/
std::string temp;
std::getline(std::cin, temp);
std::istringstream x(temp);
x >> puffer.hour >> puffer.minute >> puffer.phonenumber;

b) Get every component separately and use stoi() like functions:

std::string temp;
std::getline(std::cin, temp, ' ');
puffer.hour = stoi(temp);
std::getline(std::cin, temp, ' ');
puffer.minute = stoi(temp);
std::getline(std::cin, temp);
puffer.phonenumber = stoi(temp);

But you should make sure that there wont be 2 whitespaces in a row.

[Messzir]

Oh, I see what you did there... You deserve a trophy, sir, thanks!