64,643
社区成员
发帖
与我相关
我的任务
分享
#include <fstream>
#include <float.h>
#include<math.h>
#include <iostream>
int main()
{
double d_infinity = std::numeric_limits<double>::infinity();
std::cout << d_infinity << std::endl;
std::ofstream output;
output.open("file2.txt");
output << d_infinity;
output.close();
double d_test1 = 0;
std::ifstream input;
input.open("file2.txt");
input >> d_test1;
input.close();
system("pause");
}