Question

How to read formatted data from text file in C++

Answer 1

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

using std::cout;
using std::endl;
using std::string;

int main()
{
	int a, b, c;
	double d;
	string s1, s2;

	std::ifstream ifs("d:\\data.txt");

	if (!ifs) {
		cout << "Error open file" << endl;
		return 1;
	}

	ifs >> a;
	ifs >> b;
	ifs >> c;
	ifs >> d;
	ifs >> s1;
	ifs >> s2;

	ifs.close();

	if (!ifs.good()) {
		cout << "File error" << endl;
		return 1;
	}
	
	cout << a << " " << b << " " << c << " " << d << " " << s1 << " " << s2 << endl;

	return 0;
}

/*
run:

123 432 4 3.14 c++ programming

*/

 

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