【C++学习笔记】如何将输出定向到txt

1、增加

2、增加定向txt的文件

3、改cout为file

#include <iostream>
#include <fstream>
using namespace std;
int main()
{
	ofstream file("log.txt");
	double * p3 = new double [3];
	p3[0] = 0.2;
	p3[1] = 0.5;
	p3[2] = 0.8;
	file << "p3[1] is " << p3[1] << ".\n";
	p3 = p3 + 1;
	file << "Now p3[0] is " << p3[0] << " and ";
	file << "p3[1] is " << p3[1] << ".\n";
	p3 = p3 - 1;
	delete [] p3;
	file.close();
	return 0;
}