[英]How do you create file with a variable in C++?
I was wondering how to put a variable where "example.txt"
is below: 我想知道如何在下面的"example.txt"
放置一个变量:
ofstream file;
file.open ("example.txt");
just put a variable there :-P 只是在这里放一个变量:-P
if you use std::string
then you need to get the const char*
using .c_str()
so your options are: 如果使用std::string
则需要使用.c_str()
获取const char*
因此您的选择是:
const char *filename = "example.txt"
file.open(filename);
or: 要么:
std::string filename = "example.txt"
file.open(filename.c_str());
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