Formatting float to no decimals

[glaing]

Hi,
I have bee trying to format the following field and cannot seem to get it right. All examples show consolewrite where as I am trying to put the formatted number in a cell. Here is the code

float l_perday = 0;
l_perday = (l_gros_renew + (l_gros_renew * l_ipt))/365;

I want l_perday to be formatted with comma's but no decimals.
Thank you

 

[glaing]

The other part of it, is that I am putting it into a grid so I want the cell to take the formatted value I.E

Grid_Result.Rows.Cells["Fin_Tot_Prem"].Value = l_gros_renew + (l_gros_renew * l_ipt);
l_perday = (l_gros_renew + (l_gros_renew * l_ipt))/365;

 

[xwb]

Not very sure what you're asking.

Are you from Europe where they write five thousand one hundred and twenty three point four as 5.123,4 or from UK/US where they write it as 5,123.4? Some people call the thousands separator a comma, regardless of whether it is a comma or a dot.

When you say you want commas, do yo mean you want 5.123 (European)/5,123(English)?

 

[glaing]

Hi,
The number is coming from the db as 7795.54. I want to remove the decimals and put in the seperator 7,795 rounding up to 7,796 would even be better but not absolutely necessary

Thanks

 

[ArkM]

It's not an ideal solution but it works:

class Fmt {
public:
    Fmt(){}
    explicit Fmt(double x) {
        fmtnum(x);
    }
    Fmt& operator=(double x) {
        fmtnum(x);
        return *this;
    }
    const char* c_str() const { return s.c_str(); }
    const std::string& str() const { return s; }
private:
    std::string s;
    void trio(double x);
    void fmtnum(double x);
};

std::ostream& operator<<(std::ostream& os,const Fmt& f) 
{
    os << f.c_str();
    return os;
}

void Fmt::trio(double x)
{
    char buff[5];
    if (x < 1000.0)
        sprintf(buff,"%.0f",x);
    else {
        double y = fmod(x,1000.0);
        modf(x/1000.0,&x);
        trio(x);
        sprintf(buff,",%03.0f",y);
    }
    s += buff;
}

void Fmt::fmtnum(double x)
{
    s.erase();
    if (x < 0.0) {
        x = -x;
        s = "-";
    }
    trio(floor(x+0.5));
}
/*
    cout << Fmt(-7795.54) << endl;
    Fmt f;
    f = 12345678.0;
    cout << f << endl;
*/