動態記憶體的賦值和修改(Android之JNI)

#include <stdio.h>
#include <malloc.h>
#include <stdlib.h>

void printArr(int* arr,int len){
	int i = 0;
	for(;i<len;i++) {
		printf("arr[%d] = %d\n",i,*(arr+i));
	}
} 

main(){
	
	printf("請輸入陣列的長度\n");
	int len;
	scanf("%d",&len);
	int* arr = (int*) malloc(sizeof(int) * len) ;
	
	printf("請輸入陣列的內容\n");
	int i = 0;
	for(;i<len;i++){
		int temp; 
		scanf("%d",&temp);
		*(arr+i) = temp;
	}
	
	printArr(arr,len);
	
	
	
	
	printf("請輸入新元素的個數\n");
	int count;
	scanf("%d",&count);
	arr = (int*) realloc(arr,len+count);
	
	printf("請輸入新新增的元素值\n");
	
	int j = len;
	for(;j<(len+count);j++){
		int temp;
		scanf("%d",&temp);
		*(arr+j) = temp;
	}
	
	printf("-------最後結果------------\n");
	printArr(arr,len+count);
	
	system("pause");
}