working named pipe and pipe simple with c and golang

pipe/main.go

@@ -0,0 +1,46 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+)
+
+func main() {
+	message := "Hello from Go!"
+
+	// Create a pipe
+	reader, writer, err := os.Pipe()
+	if err != nil {
+		fmt.Println("Error creating pipe:", err)
+		return
+	}
+
+	// Execute the C program
+	cmd := exec.Command("./test_pipe_c_program")
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	cmd.Stdin = reader
+
+	// Start the C program
+	if err := cmd.Start(); err != nil {
+		fmt.Println("Error starting C program:", err)
+		return
+	}
+
+	// Write the message to the pipe
+	_, err = writer.Write([]byte(message))
+	if err != nil {
+		fmt.Println("Error writing to pipe:", err)
+		return
+	}
+
+	// Close the write end of the pipe
+	writer.Close()
+
+	// Wait for the C program to finish
+	if err := cmd.Wait(); err != nil {
+		fmt.Println("Error waiting for C program:", err)
+		return
+	}
+}

pipe/test_pipe.c

@@ -0,0 +1,19 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+int main() {
+  printf("starting C program!\n");
+
+  char buffer[100];
+  ssize_t bytesRead = read(STDIN_FILENO, buffer, sizeof(buffer));
+
+  if (bytesRead < 0) {
+    perror("Error reading from pipe");
+    return 1;
+  }
+
+  printf("C Program received: %.*s\n", (int)bytesRead, buffer);
+
+  return 0;
+}