/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 *初始化一个数组，将数组内容复制到另外两个数组中
 *第一份拷贝使用数组下标，第二份拷贝使用指针增量操作，把目标数组名和要复制的元
 *素数目作为参数传递给函数
 *+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 */

#include <stdio.h>
#define SIZE 5

void copy_index(double source[],double target[],int arrLen);
void copy_pointer(double *source,double *target,int arrLen);
void print_array(double array[],int arrLen);

int main(void)
{
    double source[SIZE]={1.1,2.2,3.3,4.4,5.5};
    double target1[SIZE];
    double target2[SIZE];
   
    copy_index(source,target1,SIZE);
    copy_pointer(source,target2,SIZE);
    print_array(target1,SIZE);
    print_array(target2,SIZE);
   
    return 0;
}

void copy_index(double source[],double target[],int arrLen)
{
    int i;
   
    for(i=0;i<arrLen;i++)
        target[i]=source[i];
}

void copy_pointer(double *source,double *target,int arrLen)
{
    int i;
   
    for(i=0;i<arrLen;i++){
        *target++=*source++;
        //经过上述语句之后，被赋值的是target，赋值之后target变为target+1，而target+1仍为空值
        printf("By copy_pointer: Target[%d] = %.1f.\n",i,*target);
    }
}

void print_array(double array[],int arrLen)
{
    int i;
       
    for(i=0;i<arrLen;i++)
        printf("By Pointer: Target[%d] = %.1f.\n",i,*array++);
}

void copy_pointer(double *source,double *target,int arrLen)
{
    int i;
   
    for(i=0;i<arrLen;i++){
        *target++=*source++;
        printf("By copy_pointer: Target[%d] = %.1f.\n",i,*target);
    }
}