[英]Using Ubuntu gedit to write to a file
我正在尝试编写一个简单的程序来写入已经存在的文件。 我收到此错误:
hello2.txt: file not recognized: File truncated
collect2: ld returned 1 exit status
我究竟做错了什么? (我尝试了两种方式的斜线,但我仍然得到同样的错误。)
#include<iostream>
#include<fstream>
using namespace std;
int main()
{
ofstream outStream;
outStream.open(hello3.txt);
outStream<<"testing";
outStream.close;
return 0;
}
其中有两个错误:
hello3.txt 是一个字符串,因此应该用引号引起来。
std::ofstream::close() 是 function,因此需要括号。
更正后的代码如下所示:
#include <iostream>
#include <fstream>
int main()
{
using namespace std; // doing this globally is considered bad practice.
// in a function (=> locally) it is fine though.
ofstream outStream;
outStream.open("hello3.txt");
// alternative: ofstream outStream("hello3.txt");
outStream << "testing";
outStream.close(); // not really necessary, as the file will get
// closed when outStream goes out of scope and is therefore destructed.
return 0;
}
请注意:此代码会覆盖该文件中以前的任何内容。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.