C + + read CSV file and write file

Source: Internet
Author: User

has been feeling on the file read and write and flow of the use of unfamiliar, recently wrote a project just need to read the CSV file data and create a new CSV file, so read some of the online CSV file reading and writing operations of the article, basic understanding of the approximate operation.


reading a. csv file


Note: the. csv file is used ', ' as the delimiter, so each read to ', ' cutoff.

The code is as follows:

#include <iostream>
#include <fstream>
using namespace Std;
int main () {
string value;
Char filename[256];
cout<< "Please enter file name" <<endl;
cin>>filename;
Ifstream infile (filename);
while (Infile.good ()) {
//.csv file with "," as separator
getline (infile,value, ', ');
cout<<value<<endl;
}
return 0;
}

The results of the code run are as follows:


create a. csv file


#include <iostream>
#include <fstream>
using namespace std;

int main () {
String value = ' Create a new file! ';
Ofstream outfile;
Outfile.open ("F:\\newfile.csv", ios::out);
outfile<<value;
Outfile.close ();
return 0;
}

The results of the code run are as follows:


Open Newfile.csv Display:





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