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#include<fstream>
#include <iostream>
using namespace std;
int main()
{
ofstream logTest("foo.log");
streambuf *oldbuf = cout.rdbuf(logTest.rdbuf());
cout << "Êä³öµ½±ê×¼Êä³ö£¬µ«Êµ¼ÊÊä³öµ½ÁËfoo.logÎļþÖÐ\n";
logTest << "Êä³öµ½Îļþ£¬ËäÈ»½«coutÖض¨Ïòµ½ÁËlog£¬µ«²»Ó°Ïìlog±¾ÉíµÄʹÓÃ\n";
// »Ö¸´Á÷»º³åÇø
cout.rdbuf(oldbuf);
cout << "Êä³öµ½±ê×¼Êä³ö\n";
getchar();
}
CµÄʵÏÖ
#include <ios>
#include <iostream>
#include <fstream>
//ÈôʹÓðüº¬.hÎļþ·½Ê½Ôò±àÒ뱨´í
using namespace std;
void main()
{
ofstream ofs("e:\\a.txt");
streambuf *osb = cout.rdbuf(ofs.rdbuf());
cout << "to file" << endl;
cout.rdbuf(osb);
cout << "to term" << endl;
}
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#include <stdio.h>
#include <string.h>
void main()
{
FILE old_stdout;
FILE *fp = fopen("e:\\a.txt", "w");
memcpy(&old_stdout, &_iob[1], sizeof(FILE));
memcpy(&_iob[1], fp, sizeof(FILE));
/*call any functions..*/
printf("to file");
/**/
/*°Ñ»º³åˢе½Îļþ*/
fflush(stdout);
memcpy(&_iob[1], &old_st
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