zad2pipe

/************************************************PIPE1*******************************************************/
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>

int main() {
    int output;
    char *fifo1 = "kacper1_2";

    mkfifo(fifo1, 0777);

    char arr[80];

    while(1) {
        output = open(fifo1, O_WRONLY);
        fgets(arr, 80, stdin);
        write(output, arr, strlen(arr)+1);
        close(output);
        if(arr[0] == '@') {
            return 0;
        }
    }
}
/***********************************************PIPE2*****************************************************************/
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>

int main() {
    int input;
    int output;

    char *fifo1 = "kacper1_2";
    char *fifo2 = "kacper2_3";
    mkfifo(fifo1, 0777);
    mkfifo(fifo2, 0777);

    char arr1[80], arr2[80];
    while(1) {
        input = open(fifo1,O_RDONLY);
        read(input, arr1, 80);
        int size = strlen(arr1) -1;
        if(arr1[0] != '@')
            printf("%s\n", arr1);
        close(input);

        output = open(fifo2,O_WRONLY);

        if(arr1[0] == '@'){
            size=0;
            sprintf(arr2, "%d", size);
            write(output, arr2, 80);
            close(output);
            break;
        } else {
            sprintf(arr2, "%d", size);
            write(output, arr2, 80);
            close(output);
        }
    }
    return 0;
}
/*************************************************PIPE3********************************************************/
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>

int main() {
    int input;

    char *fifo2 = "kacper2_3";

    char arr[80];
    while(1){
        input = open(fifo2,O_RDONLY);
        read(input, arr, 80);

        if(arr[0] != '0')
            printf("%s\n", arr);

        close(input);
        if(arr[0] == '0'){
            remove("kacper2_3");
            remove("kacper1_2");
            break;
        }
    }
    return 0;
}