작은숲:위키노트/C 언어 예제/입력받은 값을 이진 파일에 저장

/**
 * Copyright (c) 2001,2002 Yoon, Hyunho <hhyoon@kldp.org>
 * http://mooo.org
 * ----------------------------------------------------------------------
 *
 * LICENSE
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software 
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */
#include <stdio.h>
#include <stdlib.h>
#define NUM    3
typedef struct rec
{    char name[20];
    int num;
} REC;
void main()
{    int i, j;
    FILE *fp;
    REC stud[NUM];
       if ((fp = fopen("name.txt", "wb")) == NULL) {
        puts("Cannot open the file to write!");
        exit(1);
    }
    for (i = 0; i < NUM; i++) {
        scanf("%s %d", stud[i].name, &stud[i].num);
        fwrite(stud[i].name, sizeof(stud[i].name), 1, fp);
        fwrite(&stud[i].num, sizeof(stud[i].num), 1, fp);
    }
    
    fclose(fp); 
    if ((fp = fopen("name.txt", "rb")) == NULL) { 
        puts("Cannot open the file to read!");
        exit(1);
    }
    for (j = 0; j < i; j++) {
        if (fread(stud[j].name, sizeof(stud[j].name), 1, fp) != 1) break;
        if (fread(&stud[j].num, sizeof(stud[j].num), 1, fp) != 1) break;
        printf("%20s: %d\n", stud[j].name, stud[j].num);
    }
    fclose(fp);
}
이 작은숲 문서의 출처는 위키노트의 위키노트/C 언어 예제/입력받은 값을 이진 파일에 저장 문서입니다.