replacing elements horizontally and vertically in a 2D array

the code below ask for the user's input for the 2D array size and pr开发者_高级运维ints out something like this: (say an 18x6 grid)

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code starts here:

#include <stdio.h>

#define MAX 10

int main()
{
    char grid[MAX][MAX];
    int i,j,row,col;

    printf("Please enter your grid size: ");
    scanf("%d %d", &row, &col);


    for (i = 0; i < row; i++) {
        for (j = 0; j < col; j++) {
            grid[i][j] = '.';
            printf("%c ", grid[i][j]);
        }
        printf("\n");
    }

    return 0;
}

I now ask the user for a string, then ask them where to put it for example:

Please enter grid size: 18 6
Please enter word: Hello
Please enter location: 0 0
Output:
Hello.............
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Please enter location: 3 4
Output:
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..Hello...........
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program just keeps going.

Any thoughts on how to modify the code for this?

PS: Vertical seems way hard, but I want to start on horizontal first to have something to work on.

#include <stdio.h>
#include <string.h>

#define MAX 10

int main()
{
    char grid[MAX][MAX];
    int  i,j,row, col;
    char word[MAX];
    int  row_w,col_w;
    int  word_len;

    printf("Please enter your grid size: ");
    scanf("%d %d", &row, &col);

    printf("Please enter word: ");
    scanf("%s", word);
    word_len = strlen(word);

    printf("Please enter location: ");
    scanf("%d %d", &row_w, &col_w);

    for (i = 0; i < row; i++) {
        for (j = 0; j < col; j++) {
            grid[i][j] = '.';
        }
    }

    for (j = col_w; j < col_w + word_len; j ++) {
        grid[row_w][j] = word[j - col_w];
    }

    for (i = 0; i < row; i++) {
        for (j = 0; j < col; j++) {
            printf("%c ", grid[i][j]);
        }
        printf("\n");
    }

    return 0;
}