help me please, im stuck

please look at this code for battleship, look at the 'u' and 'd' part. something goes wrong there, if a ship would, under correct circumstances, block you from putting a ship in a certain direction it will just overwrite whats there. the 'l' and 'r' work fine, but not the 'u' and 'd'. left, right, up, down, you get it.

Code:

do
	{

        if(test==0) cout<<"Invalid direction, please re-enter the info."<<endl<<endl;
	    test=1;
		cout<<"Now choose which direction to finish the ship in (l,r,u,d): ";
	    cin>>dir;

	    switch(dir)
		{
	    case 'l':
			if(col-size>=1)
			{
			    for(int i=0;i<=size-1;i++)
				{
				    if(board[row][col-i]!='~') 
					{
					    test=0;
					    continue;
					}
				}
			}
		    else
			{
			    test=0;
				continue;
			}
			if(test=1) 
			{
				for(int x=0;x<=size-1;x++)
				{
					board[row][col-x]=ship[0];
				}
			}
			break;
				

		case 'r':
			if(col+size<=10)
			{
			    for(int i=0;i<=size-1;i++)
				{
				    if(board[row][col+i]!='~') 
					{
					    test=0;
					    continue;
					}
				}
			}
			else
			{
			    test=0;
				continue;
			}
			if(test=1) 
			{
			    for(int x=0;x<=size-1;x++)
				{
					board[row][col+x]=ship[0];
				}
			}
			break;

		case 'u':
			if(row-size<=1)
			{
			    for(int i=0;i<=size-1;i++) //error here, i think
				{
				    if(board[row-i][col]!='~') 
					{
					    test=0;
					    continue;
					}
				}
			}
			else
			{
			    test=0;
				continue;
			}
			if(test=1) 
			{
			    for(int x=0;x<=size-1;x++)
				{
					board[row-x][col]=ship[0];
				}
			}
			break;

		case 'd':
			if(row+size<=10)
			{
			    for(int i=0;i<=size-1;i++) //error here, i think
				{
				    if(board[row+i][col]!='~') 
					{
					    test=0;
					    continue;
					}
				}
			}
		    else
			{
			    test=0;
				continue;
			}
			if(test=1) 
			{
			    for(int x=0;x<=size-1;x++)
				{
					board[row+x][col]=ship[0];
				}
			}
		}
		
	}while(test==0);

you might want to consider putting the row+size<=10 like this: (row + size) <= 10


order of operations might be the problem.

Hi!
I would not even consided reading that code line by line.. but I accidentaly stumbled over a line that says

if(test=1)

and I'll bet my right leg that's, at least one of the things that might mess up your program.

the equalilty operator is == and not =, = is the assignement operator.

/Laos