#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

int main() {
    printf("1. Writing a space character\n");
    write(1, " ", 1);

    printf("2. Writing an integer\n");
    int i = 20;
    write(1, &i, sizeof(i));

    printf("3. Writing a character\n");
    char c = 'a';
    write(1, &c, 1);

    printf("4. Writing a short\n");
    short s = 99;
    write(1, &s, sizeof(s));

    printf("5. Writing a string\n");
    char *str = "Hello, world!";
    write(1, str, strlen(str));

    printf("6. Writing an array of integers\n");
    int arr[] = {1, 2, 3, 4, 5};
    write(1, arr, sizeof(arr));

    printf("7. Writing a formatted string\n");
    int num = 123;
    char buffer[20];
    sprintf(buffer, "The number is %d", num);
    write(1, buffer, strlen(buffer));

    printf("8. Writing binary data\n");
    float f = 3.14;
    write(1, &f, sizeof(f));

    printf("9. Writing data from a buffer\n");
    char buffer2[1024];
    // Fill buffer2 with data...
    write(1, buffer2, sizeof(buffer2));

    printf("10. Writing data from a struct\n");
    struct {
        int id;
        char name[20];
    } person;

    printf(": Populate person...\n");
    write(1, &person, sizeof(person));

    return 0;
}