Using getline to read data from a file in C++ - c++

Question

I want to read from a file two things, the full name (first name and last name)
and age. After that I want to store them in an array then print the data.
However, when I try to reading the first record is read find, but the other two are not.
Please tell me what am I missing.
Thank you.
The content of the file is:
sampleFirst1 sampleLast1
30
sampleFirst2 sampleLast2
25
sampleFirst3 sampleLast3
40
The Output is:
Name: sampleFirst1 Age: 30
Name: Age: 30
Name: Age: 30
Here's my Code:
#include "Person.h"
#include <iostream>
#include <fstream>
using namespace std;
int main()
{
ifstream inputFile("data.txt", ios::in);
string full_name;
int age = 0;
int i = 0;
Person personArray[3];
while (i < 3)
{
getline(inputFile, full_name);
personArray[i].set_name(full_name);
inputFile >> age;
personArray[i].set_age(age);
++i;
}
inputFile.close();
printData(personArray, 3);
cout << endl;
return 0;
}

Answer 1

You should not mix getline and the >> operator in that way. Prefer a simpler code like this one :
#include <iostream>
#include <fstream>
#include <array>
#include <string>
using namespace std;
struct Person {
std::string name;
int age;
void set_name(std::string const& i_name) { name = i_name; }
void set_age(int i_age) { age = i_age; }
};
int main()
{
ifstream inputFile("data.txt", ios::in);
std::string first;
std::string last;
int age = 0;
int i = 0;
std::array<Person,3> personArray;
while (i < personArray.size()) {
inputFile >> first >> last >> age;
personArray[i].set_name(first + " " + last);
personArray[i].set_age(age);
++i;
}
inputFile.close();
for(Person const& person : personArray) {
std::cout << "Name: " << person.name << " Age: " << person.age << "\n";
}
std::cout << std::flush;
return 0;
}
Or use only getline and a istringstream to pase the age if you dont want to pay the string concatenation extra cost for the full name.
A lot could be said of the parsing method but that is not the point here.