Program to allocate memory for a 2D array.

Solution #1: Here is the code,

#include 
#include 

int** alloc2d(int row, int col)
{
    int i;
    int** ptr = NULL;

    ptr = (int**)malloc(row * sizeof(int*));

    for(i=0; i< row; i++)
        ptr[i] = (int*)malloc(col * sizeof(int));

    return ptr;
}

int main()
{
    int** arr = alloc2d(5, 10);

    int i,j;

    for(i=0; i<5; i++)
        for(j=0; j<10; j++)
            arr[i][j] = i*j;

    for(i=0; i<5; i++)
    {
        for(j=0; j<10; j++)
        {
            printf("%d\t",arr[i][j]);
        }
        printf("\n");
    }
    return 0;
}