#include <stdio.h>

void line(size)
{
    int i;

    for(i=0; i<size; i++)
    {
        printf("+-----");
    }
    printf("+");
}

void row(size)
{
    int i, j;

    for(j=0; j<3; j++)
    {
        printf("\n");
        for(i=0; i<size; i++)
        {
            printf("|     ");
        }
        printf("|");
    }
}

void grid(size)
{
    int i;

    for(i=0; i<size; i++)
    {
        line(size);
        row(size);
        printf("\n");
    }
    line(size);
}

int main(int argc, char *argv[])
{
    grid( 8 );

    return 0;
}

+-----+-----+-----+-----+-----+-----+-----+-----+
|     |     |     |     |     |     |     |     |
|     |     |     |     |     |     |     |     |
|     |     |     |     |     |     |     |     |
+-----+-----+-----+-----+-----+-----+-----+-----+
|     |     |     |     |     |     |     |     |
|     |     |     |     |     |     |     |     |
|     |     |     |     |     |     |     |     |
+-----+-----+-----+-----+-----+-----+-----+-----+
|     |     |     |     |     |     |     |     |
|     |     |     |     |     |     |     |     |
|     |     |     |     |     |     |     |     |
+-----+-----+-----+-----+-----+-----+-----+-----+
|     |     |     |     |     |     |     |     |
|     |     |     |     |     |     |     |     |
|     |     |     |     |     |     |     |     |
+-----+-----+-----+-----+-----+-----+-----+-----+
|     |     |     |     |     |     |     |     |
|     |     |     |     |     |     |     |     |
|     |     |     |     |     |     |     |     |
+-----+-----+-----+-----+-----+-----+-----+-----+
|     |     |     |     |     |     |     |     |
|     |     |     |     |     |     |     |     |
|     |     |     |     |     |     |     |     |
+-----+-----+-----+-----+-----+-----+-----+-----+
|     |     |     |     |     |     |     |     |
|     |     |     |     |     |     |     |     |
|     |     |     |     |     |     |     |     |
+-----+-----+-----+-----+-----+-----+-----+-----+
|     |     |     |     |     |     |     |     |
|     |     |     |     |     |     |     |     |
|     |     |     |     |     |     |     |     |
+-----+-----+-----+-----+-----+-----+-----+-----+