【C/C++】merge two array by order

#include "stdio.h"void show(int a[],int len) {int i;for (i = 0; i < len; i++) {printf("%d-", a[i]);}printf("\n");}void merge(int arr1[], int arr2[], int res[]) {printf("before merge:\n");show(arr1,10);show(arr2,10);int i=0, j=0;int idx = 0;for (;;) {printf("show res:");show(res,20);if(i>=10 || j>=10)break;if (arr1[i] <= arr2[j]) {res[idx] = arr1[i];i++;} else {res[idx] = arr2[j];j++;}idx++;}if(i<10){for(;i<10;i++){res[idx] = arr1[i];idx++;}}if(j<10){for(;j<10;j++){res[idx] = arr1[j];idx++;}}return;}int main() {int arr1[10] = { 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 };int arr2[10] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };int res[20]={0};int size = sizeof(res)/4;printf("res size:%d\n",size);merge(arr1, arr2, res);printf("final:");show(res,20);return 0;}

refer to :http://blog.csdn.net/xiewenbo/article/details/34419435