Turning the matrix into a vector.

#include <stdio.h>
#include <conio.h>

void main() {
    int l, c, a[10][10], i, j, k[20];

    printf("Number of lines: ");
    scanf_s("%d", &l);

    while (l > 10 || l < 1) {
        printf("Insert the number of lines(from 1 to 10): ");
        scanf_s("%d", &l);
    }

    printf("Number of columns: ");
    scanf_s("%d", &c);

    while (c > 10 | c < 1) {
        printf("Insert the number of columns(from 1 to 10): ");
        scanf_s("%d", &c);
    }

    for (i = 0; i < l; i++) {
        for (j = 0; j < c; j++) {
            printf("V[%d][%d]= ", i, j);
            scanf_s("%d", &a[i][j]);
        }
    }
    printf("The matrix is : \n");
    for(i = 0; i < l; i++) {
        for (j = 0; j < c; j++) {
            printf("%d ", a[i][j]);
        }
        printf("\n");
    }
    printf("For turninig the matrix into a vector, press any key.\n");
    _getch();

    printf("V=[");
    for (i = 0; i < l; i++) {
        for (j = 0; j < c; j++) {
            k[j] = a[i][j];
            printf("%d ", k[j]);
        }
    }
    printf("]\n");
    printf("\nPress any key to close the console.");
    _getch();
}