#include <stdio.h>
#include <stdlib.h>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
void writeText01();
void readText01();

void writeBinary01();
void readBinary01();

typedef struct Student_ST {
	char name[30];
	int age;
} Student;

int main(int argc, char *argv[]) {
//	writeText01();
//	readText01();
//	writeBinary01();
	readBinary01();
	
	return 0;
}

void writeText01() {
	//B1. Mo ket toi FILE
	FILE *fp;
	fp = fopen("test01.txt", "w");
	
	if(fp == NULL) {
		printf("\nGhi error!!!");
	} else {
		printf("\nMo file de ghi thanh cong!!!");
		//B2. Ghi noi dung vao file
		//ghi ky tu
		fputc('B', fp);
		fputs("\nTRAN VAN B", fp);
		fprintf(fp, "\nHo ten: %s, tuoi: %d", "XYZ", 12);
	}
	
	//B3. Dong file
	fclose(fp);
}

void readText01() {
	//B1. Mo ket toi FILE
	FILE *fp;
	fp = fopen("test01.txt", "r");
	
	if(fp == NULL) {
		printf("\nDoc error!!!");
	} else {
		printf("\nMo file de doc thanh cong!!!\n");
		//B2. Doc noi dung tu file
		char c;
		while((c = fgetc(fp)) != -1) {
			printf("%c", c);
		}
	}
	
	//B3. Dong file
	fclose(fp);
}

void writeBinary01() {
	//Fake data 
	Student stdList[2];
	int i;
	for(i=0;i<2;i++) {
		printf("\nNhap ten: ");
		fflush(stdin); fflush(stdout);
		gets(stdList[i].name);
		printf("\nNhap tuoi: ");
		scanf("%d", &stdList[i].age);
	}
	
	//Luu du lieu vao file
	//B1. Mo ket toi FILE
	FILE *fp;
	fp = fopen("test01.dat", "wb");
	
	if(fp == NULL) {
		printf("\nGhi error!!!");
	} else {
		printf("\nMo file de ghi thanh cong!!!\n");
		//B2. ghi noi dung vao file
		fwrite(stdList, sizeof(Student), 2, fp);
	}
	
	//B3. Dong file
	fclose(fp);
}

void readBinary01() {
	Student stdList[2];
	
	//B1. Mo ket toi FILE
	FILE *fp;
	fp = fopen("test01.dat", "rb");
	
	if(fp == NULL) {
		printf("\nDoc error!!!");
	} else {
		printf("\nMo file de doc thanh cong!!!\n");
		//B2. doc noi dung vao file
		fread(stdList, sizeof(Student), 2, fp);
	}
	
	//B3. Dong file
	fclose(fp);
	
	//Hien thi du lieu
	int i;
	for(i=0;i<2;i++) {
		printf("\nTen: %s, tuoi: %d", stdList[i].name, stdList[i].age);
	}
}