double转换为string ?

[lincolnandlinda]

有没有现在的函数可以把double转为string?

[猫已经找不回了]

double number;
number = atof(temp.c_str());

[lincolnandlinda]

你这把string 转为double

[Qlaiaqu]

double d = *****;
char a[100];
sprintf(a,"%f"，d);
string s(a);

[downmooner]

stringstream strstm;
	double d=11111.1;
	strstm<<d;
	string str=strstm.str();
	cout<<str<<endl;

[lincolnandlinda]

你这样做会损失精度的，不信你试试看。如果 d=1.111111111111,估计写入的可能 是d=1.11111;

[downmooner]

double d=1.111111111111;
cout<<d<<endl;

打印也是1.11111

[yangkunhenry]

Converts a floating-point number to a string. This function is deprecated because a more secure version is available; see _fcvt_s.

 
char *_fcvt( 
   double value,
   int count,
   int *dec,
   int *sign 
);
 

[yangch_nhcmo]

自己写一个

#include <iostream>
#include <string>
#include <sstream>
using namespace std;
const int MaxLen = 100 ;

int main()
{
    double d = 1.722300;

    char s[MaxLen];
    sprintf(s,"%f",d);

    string str(s);
    cout << str << endl;

    return 0;
}

[jackzhhuang]

精度要求太高，只能再输入的时候控制住了。

[lincolnandlinda]

有没有能转换double类型的啊？？