打印浮点值

/* showf_pt.c -- 以两种方式显示浮点值*/

#include <stdio.h>

int main (void)

{

    float aboat = 32000.0;

    double abet = 2.14e9;

    long double dip = 5.32e-5;

    printf ("%f can be written %e\n",aboat,aboat);

    printf ("%f can be written %e\n",abet,abet);

    printf ("%f can be written %e\n",dip,dip);

    return 0;

}

输出结果如下：

32000.000000 can be written 3.200000e+04

2140000000.000000 can be written 2.140000e+09

0.000053 can be written 5.320000e-05