Help with C Code

[hasty sierra]

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[cyan field]

Here's the code that I have tried so far: ```#include <stdio.h>
#include <stdlib.h>

int main() {
int row, col;

printf("Please give the second dimension: ");
scanf("%d", &col);

int (*arr)[col] = malloc(5 * sizeof(int[col]));

printf("Please give the numbers: ");
for (row = 0; row < 5; row++) {
    for (col = 0; col < (sizeof(*arr) / sizeof(int)); col++) {
        scanf("%d", &arr[row][col]);
    }
}

printf("The matrix is:\n");
for (row = 0; row < 5; row++) {
    for (col = 0; col < (sizeof(*arr) / sizeof(int)); col++) {
        printf("%d ", arr[row][col]);
    }
    printf("\n");
}

printf("\nThe max numbers per row/column are:\n");
for (row = 0; row < 5; row++) {
    int row_max = arr[row][0];
    for (col = 1; col < (sizeof(*arr) / sizeof(int)); col++) {
        if (arr[row][col] > row_max) {
            row_max = arr[row][col];
        }
    }
    for (col = 0; col < (sizeof(*arr) / sizeof(int)); col++) {
        if (row == 0) {
            printf("--");
        }
        printf("--");
    }
    if (row == 0) {
        printf("-\n");
    }
    printf("\n");
    for (col = 0; col < (sizeof(*arr) / sizeof(int)); col++) {
        if (col == 0) {
            printf("%d ", arr[row][col]);
        } else {
            printf("| %d ", arr[row][col]);
        }
    }
    printf("| %d\n", row_max);
}

for (col = 0; col < (sizeof(*arr) / sizeof(int)); col++) {
    if (col == 0) {
        printf("--");
    } else {
        printf("---");
    }
}
printf("-\n");

for (col = 0; col < (sizeof(*arr) / sizeof(int)); col++) {
    int col_max = arr[0][col];
    for (row = 1; row < 5; row++) {
        if (arr[row][col] > col_max) {
            col_max = arr[row][col];
        }
    }
    if (col == 0) {
        printf("%d ", col_max);
    } else {
        printf("| %d ", col_max);
    }
}
printf("|\n");

free(arr);

return 0;

}And here's the output that I get::pray: Please give the second dimension: 3
Please give the numbers: 1 8 3 6 2 9 5 9 7 8 2 1 3 5 5

The matrix is:
1 8 3
6 2 9
5 9 7
8 2 1
3 5 5

The max numbers per row/column are:

1 | 8 | 3 | 8

6 | 2 | 9 | 9

5 | 9 | 7 | 9

8 | 2 | 1 | 8

3 | 5 | 5 | 5

8 | 9 | 9 |```

I allocate memory for the 2D array of 5 x col size using malloc as said. And I declare arr as a pointer to an array of col integers (int (*arr)[col]), and we allocate 5 such arrays using 5 * sizeof(int[col]). This ensures that only the second dimension of the array is allocated dynamically.