C库 float.h

#include <stdio.h>

#include <float.h>



int main () {

   printf("The maximum value of float = %.10e\n", FLT_MAX);

   printf("The minimum value of float = %.10e\n", FLT_MIN);

   printf("The number of digits in the number = %.10e\n", FLT_MANT_DIG);

}