Ned to optimize the code

[Mariusmssj]

simple xox game but i kinda got a problem, that if statement works but it's too long, any ideas how to change into something better? and is there any better way to say the user won without having that "break;"?

thanks for any help =)

#include <iostream>
#include <string>

void main()
{
char grid[3][3] = {'.','.','.','.','.','.','.','.','.'};
int row = 0;
int col = 0;
char input;
std::string msg = "";


std::cout<< "  0 1 2"<<"\n"<<"0 . . ."<<"\n"<<"1 . . ."<<"\n"<<"2 . . ."<<std::endl; 

for(int k=0;k<9;k++)
{
	std::cout<< "Enter row: ";
	std::cin>> row;
	std::cout<< "Enter collum: ";
	std::cin>> col;
	std::cout<< "Enter X or O: ";
	std::cin>> input;
	grid[row][col]= input;

for(int i=0;i<3;i++)
{
	for(int j=0;j<3;j++)
	{
		std::cout<< grid[i][j];
	}
	std::cout<< "\n";
}
if(((((((((grid[0][0]=='x')&&(grid[0][1]=='x')&&(grid[0][2]=='x')||
(grid[1][0]=='x')&&(grid[1][1] == 'x')&&(grid[1][2]=='x')||(grid[2][0]=='x')&&
(grid[2][1]=='x')&&(grid[1][2]=='x')))))))))
{
	msg = "you won";
	break;
}
else
{
	msg = "You lost";
}
}
std::cout<< msg;
}

the output