feat: ex1 pipes done

pipes/ex1/.gitignore

+*.o
+simple_pipe

pipes/ex1/Makefile

+CC := clang
+CFLAGS := -g -pedantic -Wall -Wextra -std=c11
+LDFLAGS := -fsanitize=address -fsanitize=leak -fsanitize=undefined -lm -lpthread
+TARGET := simple_pipe
+
+all: $(TARGET)
+
+$(TARGET): simple_pipe.o
+	@printf "=================== Building executable ===================\n"
+	$(CC) $(CFLAGS) $^ -o $@ $(LDFLAGS)
+	@printf "\n"
+
+%.o: %.c
+	@printf "================== Building object files ==================\n"
+	$(CC) $(CFLAGS) -c $<
+	@printf "\n"
+
+
+.PHONY: clean
+
+clean:
+	rm -f *.o $(TARGET)
+
+.PHONY: rebuild
+	
+rebuild: clean all

pipes/ex1/simple_pipe.c

+#include <libgen.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <time.h>
+#include <unistd.h>
+#define DATA_LEN (1 << 9)
+
+int main(void) {
+    srand(time(NULL));
+
+    int arr_fd[2] = {0};
+    char buff[DATA_LEN] = {0};
+    int wstatus;
+
+    for (size_t i = 0; i < DATA_LEN; i++) {
+        buff[i] = rand() % INT8_MAX;
+        fprintf(stdout, "%d ", buff[i]);
+    }
+    fprintf(stdout, "\n");
+
+    if (pipe(arr_fd) == -1) {
+        perror("pipe");
+    }
+
+    pid_t pid = fork();
+
+    if (pid > 0) { // Parent
+        // Parent closes exit FD
+        close(arr_fd[0]);
+
+        write(arr_fd[1], buff, DATA_LEN);
+        close(arr_fd[1]);
+
+        wait(&wstatus);
+        if (WIFEXITED(wstatus)) {
+            fprintf(stdout, "Child has terminated\n");
+        }
+    } else if (pid == 0) { // Child
+        // Child closes entry FD
+        close(arr_fd[1]);
+        char child_buff[DATA_LEN] = {0};
+        size_t count = 0;
+        size_t bytes_read = 0;
+
+        while ((bytes_read = read(arr_fd[0], child_buff, 16))) {
+            count += bytes_read;
+        }
+
+        fprintf(stdout, "Number of bytes read: %lu\n", count);
+    } else { // Error
+        perror("fork");
+    }
+
+    return EXIT_SUCCESS;
+}