在科学记数法中，数字表示为十进制数乘以10的幂

这里是一些例子。

以下代码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("And it's %a in hexadecimal, powers of 2 notation\n", aboat);
    printf("%f can be written %e\n", abet, abet);
    printf("%Lf can be written %Le\n", dip, dip);

    return 0;
}