Inter-Process-Communication-IPC-/Shared Memory/reader.c

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

extern int
read_from_shared_memory(char* mmap_key,
	char* buffer,
	unsigned int buff_size,
	unsigned int bytes_to_read);

int
main(int argc, char* argv[]) {

	char* key = "/introduction";
	char read_buffer[128];
	memset(read_buffer, 0, 128);

	int rc = read_from_shared_memory(key, read_buffer, 128, 128);
	if (rc < 0) {
		printf("Error reading from shared memory\n");
		return -1;
	}

	printf("Data read = %s\n", (char*)read_buffer);

	return 0;
}