C / C++ / MFC

#include<iostream>

#include<conio.h>

using namespace std;

int mani(int (&arr)[10], const int& x)//Line1
{
for (int i = 0; i < 1; ++i)
arr[i] = arr[i] + x;
return x; //returns 4
}

int main(){
int arr[10] = {2, 3, 4, 5, 6, 7, 8, 9, 10, 11};
cout<<mani(arr, arr[0]);
}

SOCKET sock = socket( AF_INET, SOCK_DGRAM, IPPROTO_UDP );

sockaddr_in targetAddr;
targetAddr.sin_addr.s_addr = inet_addr( "...some IP..." );
targetAddr.sin_family = AF_INET;
targetAddr.sin_port = htons( 1337 );	

char arr[1400];
long long sent = 0;
while( !kbhit() )
{
	for( int i=0; i<1000; ++i )
	{
		long res;
		if( (res=sendto( sock, arr, 1400, 0, (sockaddr*)&targetAddr, sizeof( targetAddr ) )) == SOCKET_ERROR )
		{
			printf("Error: %d\n", WSAGetLastError() );
			return -1;
		}
		sent += res;
	}
	
	printf("\r%d MBs sent", (long)(sent >> 20) );
}