1,在開發過程中,我們經常要用到浮點型數據,但是計算機中保存的數據是二進制數據,所有我們需要掌握二進制數據(16進制)轉換位浮點型數據,我現在來舉例說明:
#include<stdio.h>
int main()
{
long int y = 0xfffffffffffffff7;
int z = 0xffffffff;
double * x = (double*)&y;
printf("*x=%lf\n",*x);
float *absent_value = (float*)&z;
printf("absent = %f\n",*absent_value);
}