Calculate how to display a hand of cards for 80 column console

cardspace.c

#include <stdio.h>
void main() {
    int x,y,z,spaceleft,spaceright,width;
    printf("|");
    for (x=0;x<80;x++) {
        printf(" ");
    }
    printf("|left card right\n");
    for (x=1;x<=13;x++) {
        width = 67 / x;
        if (width>13) {
            width = 13;
        }
        spaceleft = (67 - width * (x-1)) / 2;
        spaceright = spaceleft + (67 - width * (x-1)) % 2;
        printf("|");
        for (y=0;y<spaceleft;y++) {
            printf(" ");
        }
        for (y=1;y<x;y++) {
            for (z=0;z<width;z++) {
                if (z==0) printf("[");
                else if (z==12) printf("]");
                else printf(" ");
            }
        }
        printf("|           |");
        for (y=0;y<spaceright;y++) printf(" ");
        printf("|%.4d %.4d %.4d\n",spaceleft, width, spaceright);
    }
}