#include <stdio.h>


struct Person {
	int age;
	int year_of_birth;
	char forename[30];
	char surname[50];
};


void print_person(struct Person p) {
	printf("p.age=%d p.year_of_birth=%d p.forename=%s p.surname=%s\n", p.age, p.year_of_birth, p.forename, p.surname);
}


int main() {
	struct Person p;
	FILE *fp;
	char choice;
	char filename[4097];

	printf("Read or write a file? (r/w) "); scanf("%c", &choice);

	if (choice == 'w') {
		printf("Enter age: "); scanf("%d", &p.age);
		printf("Enter birth year: "); scanf("%d", &p.year_of_birth);
		printf("Enter forename: "); scanf("%29s", p.forename);
		printf("Enter surname: "); scanf("%49s", p.surname);

		printf("Enter filename to save to: "); scanf("%4096s", filename);
		fp = fopen(filename, "wb");
		if (fp == NULL) {
			printf("Failed to open file for writing\n");
			return 1;
		}
		fwrite(&p, 1, sizeof(p), fp);
	} else {
		printf("Enter file to read from: "); scanf("%4096s", filename);
		fp = fopen(filename, "rb");
		if (fp == NULL) {
			printf("Failed to open file for reading\n");
			return 1;
		}
		fread(&p, 1, sizeof(p), fp);
	}

	print_person(p);
	return 0;
}