使用来自float.h和limits的数据，找到该系统的一些数字限制

#include <stdio.h>
#include <limits.h>    // integer limits
#include <float.h>     // floating-point limits

int main(void){    
    printf(Biggest int: %d\n, INT_MAX);
    printf(Smallest long long: %lld\n, LLONG_MIN);
    printf(One byte = %d bits on this system.\n, CHAR_BIT);
    printf(Largest double: %e\n, DBL_MAX);
    printf(Smallest normal float: %e\n, FLT_MIN);
    printf(float precision = %d digits\n, FLT_DIG);
    printf(float epsilon = %e\n, FLT_EPSILON);
    return 0;
}