Buscaminas

 #include <stdio.h>
 
 int main () {
 	int matriz [4][4]={{'_','*','_','*'},{'!','_','_','_'},{'*','_','*','*'},{'*','_','*','_'}};
 	int i,j;
 	int x,y;
 	int error=0;
 	while (error<3){
 	    
 		for (i=0; i<4; i++){
 			for (j=0; j<4; j++){
 				printf (" %c ", matriz [i][j]);
 			}
 				printf("\n");
 		}
 		//prueba de escritorio
 		printf("Coordenada en x, y: ");
 		scanf("%d,%d", &x,&y);
 		
 		if(matriz[x][y]=='*');
 			matriz[x][y] ='!';
 		else{
 			error++;
 			matriz[x][y] = 'O';	
 			}
 		
 		return 0;
 				
 }