Which C99 function can be used to convert a string to a double?

atof

Explanation:

atof function is used to convert a string to a double.

It takes a single parameter of type const char * and returns a double value.

The function signature is: double atof (const char * str);

In order to use this function in the code, you need to include the header file

For example:

#include

#include

int main ()

{

char str[5] = "0.01";

double d = atof (str);

printf ("Value = %f/n", d);

return 0;

}