#include "screen.h"
#include <math.h>
void draw(screen_t *screen, size_t n) {
size_t x = 0, y = 0;
for(y = 0; y < n; ++y) {
screen_putchar(screen, x++, y, '@');
}
x = n - 1;
for(y = 0; y < n; ++y) {
screen_putchar(screen, x--, y, '@');
}
}
int main(void) {
screen_t *screen = screen_init(130, 40);
size_t n;
scanf("%lu", &n);
draw(screen, n);
screen_refresh(screen, stdout);
screen_deinit(screen);
return 0;
}
#ifndef _SCREEN_H_
#define _SCREEN_H_
#include <stdio.h>
#include <stddef.h>
typedef struct {
size_t width, height;
char *buff;
} screen_t;
screen_t *screen_init(size_t width, size_t height);
void screen_deinit(screen_t *screen);
void screen_putchar(screen_t *screen, size_t x, size_t y, char ch);
void screen_refresh(screen_t *screen, FILE *fp);
void screen_draw_border(screen_t *screen, char ch);
#endif
#include "screen.h"
#include <stdlib.h>
#include <string.h>
screen_t *screen_init(size_t width, size_t height) {
screen_t *screen = malloc(sizeof(*screen));
*screen = (screen_t){width, height, malloc(width * height)};
memset(screen->buff, ' ', screen->width * screen->height);
return screen;
}
void screen_deinit(screen_t *screen) {
free(screen->buff);
free(screen);
}
void screen_putchar(screen_t *screen, size_t x, size_t y, char ch) {
if(x < screen->width && y < screen->height)
screen->buff[y * screen->width + x] = ch;
}
void screen_refresh(screen_t *screen, FILE *fp) {
for(size_t y = 0; y < screen->height; ++y) {
for(size_t x = 0; x < screen->width; ++x) {
fputc(screen->buff[y * screen->width + x], fp);
}
fputc('\n', fp);
}
}
void screen_draw_border(screen_t *screen, char ch) {
for(size_t y = 0; y < screen->height; ++y) {
for(size_t x = 0; x < screen->width; ++x) {
if(y == 0 || x == 0 || y == screen->height - 1 || x == screen->width - 1)
screen_putchar(screen, x, y, ch);
}
}
}
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