is not a member of 'std'

[myhanguk]

Hi...
It seems I'm always having problems with the std:: thing...

When I try this:

#include <limits>

using namespace std;



int main(){

	double log_double_max = std::log(std::numeric_limits<double>::max());
	const double log_double_min = log(numeric_limits<double>::min());
                return(0);
}

I get the following error messages:

error C2039: 'log' : is not a member of 'std'
error C2589: '(' : illegal token on right side of '::'
error C2143: syntax error : missing ')' before '::'
etc...

Nevertheless, when I type std:: the object browser pops up and I see the log, numeric_limits and all the other functions.

So why do I get this error: error C2039: 'log' : is not a member of 'std' then?

Thanks for your input on this.

Niko

[ZuK]

 #include <cmath>

should help
Kurt

[sunnypalsingh]

Like Zuk said, you need to include <cmath> for log function. You can find all the details of library functions and header from this link