C programming newbie; battleships boats

Greetings, its my first post here;
So i have done only programming in Python before and its my first time in C.
I am making a battleship game, in which the user is to input coordinates on a 10x10 board and, there are hidden boats in the board; the boats are randomized each time. Well the only problem is that i have the programming logic, but i dont know the syntax in C, everytime i try to run something i get like 100 errors..
I have made my board using a while loop;

int main(void){ 


int sea[10][10];
int x;
int y=0;
int m=0;
int n=0;
while(y<10){
		x =0;
	while(x<10){
		sea[x][y]=('.');
		printf("%c",sea[x][y]);
		x=(x+1);
	
	}
	printf("\n");
	
	y=(y+1);
}
	printf("\nPlease enter a coordinate to shoot at!\n");
	scanf("%d%d",&m,&n);



}

This is what i have so far, a double array, and each x and y char '.' making the board..

My question is how would i add the random ships and the hits. I tried using printf to get coords and then scanf to get the numbers, but how do i like, put those numbers to match the array? I know i have to use if statements such as

if m n == 5, 5 .. see thats the thing i know what to do, i dont know how to write it out ? the syntax of C

Any help is appreciated.