C++ Merge arrays

Merge two arrays into one.

#include <stdio.h>
#define MAX 200

// Print the content of the array Arr to the screen in one line
void printarr (int Arr[], int len) {
	for (int idx=0; idx < len; idx++) printf( "%d ", Arr[idx] ); 
		printf("\n"); // Print newline
}

// Merge the two arrays into one array.
int merge(int Arr1[], int len1,  int Arr2[], int len2, int MergeArr[]) {
	int MergeLen = len1+len2;
	int i,j,k; i = j = k = 0;

	for (; i <  len1 && j < len2 ; k++) {
		if (Arr1[i] < Arr2[j]) MergeArr[k] = Arr1[i++];
		else MergeArr[k] = Arr2[j++];
	}
	for (; i < len1; MergeArr[k ++] = Arr1[i ++]);
	for (; j < len2; MergeArr[k ++] = Arr2[j ++]);
	return MergeLen;
	}  // Of merge

void main () {
	  int Arr1[] = { 1,35, 10,31,52,22, 76,89,100};
	  int Arr2[] = { 2,8, 43, 15,21,19, 32};
	  int Arr1Len = sizeof(Arr1)/sizeof(int), Arr2Len=sizeof(Arr2)/sizeof(int), MergeArrLen ;
	  int MergeArr[MAX];
	  printarr(Arr1, Arr1Len); // Print the content of the first array
	  printarr(Arr2, Arr2Len); // Print the content of the second array
	  MergeArrLen = merge(Arr1, Arr1Len, Arr2, Arr2Len, MergeArr); // Merge the two arrays into a new one
	  printarr(MergeArr, MergeArrLen); // Print the sort array.
}