I need to read a large ".txt" file and its contents are in the following format:
1 12
1 13
2 5
2 6
I would like to know if you can read the value of each column and store it in a list, for example:
Ler "1"
Armazenar o "1" numa lista
Ler "12"
Armazenar 12 numa lista
ler "1"
Armazenar "1" na lista
ler "13"
Armazenar 13 na lista
...
And so on
To have 2 lists, each containing the numbers of a column the code below can help.
int main() {
std::ifstream file{"text.txt"};
std::vector<std::string> columnA;
std::vector<std::string> columnB;
std::string string;
int i = 0;
while ( !file.eof() ) {
file >> string;
if (i++ % 2 == 0) columnA.push_back(string);
else columnB.push_back(string);
}
for (auto s : columnA) std::cout << s << "\n";
std::cout << "\n";
for (auto s : columnB) std::cout << s << "\n";
return 0;
}