89 lines
2.2 KiB
C
89 lines
2.2 KiB
C
#include <stdio.h>
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#include <stdbool.h>
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#define MALE false
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#define FEMALE true
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typedef struct {
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int year;
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int month;
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int date;
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} DATE;
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typedef struct {
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int ID;
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char name[21];
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bool sex;
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DATE birthday;
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double score;
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} STUDENT;
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void saveStu(STUDENT students[], int count) {
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int i;
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FILE* fileObj;
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for (i = 0; i < count; i++) {
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printf("ID: ");
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scanf("%d", &students[i].ID);
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printf("Name(max 20 char): ");
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scanf("%20s", students[i].name);
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printf("Sex: (MALE-0/FEMLE-1)");
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scanf("%d", &students[i].sex);
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printf("Birthday (Year/Month/Date):");
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scanf("%d/%d/%d", &students[i].birthday.year, &students[i].birthday.month, &students[i].birthday.date);
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printf("Scores:\n");
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scanf("%lf", &students[i].score);
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}
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fileObj = fopen("studentInfos", "wb");
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if (fileObj == NULL) {
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printf("Cannot open file.\n");
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return;
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}
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if (fwrite(students, sizeof(STUDENT), count, fileObj) == 0) {
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printf("Print file error.\n");
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}
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fclose(fileObj);
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}
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void loadStu(STUDENT students[], int count) {
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int i;
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FILE* fileObj;
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int targetID;
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fileObj = fopen("studentInfos", "rb");
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if (fileObj == NULL) {
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printf("Cannot open file.\n");
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return;
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}
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if (fread(students, sizeof(STUDENT), count, fileObj) == 0) {
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printf("Read error.\n");
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return;
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}
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fclose(fileObj);
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printf("Loaded.\n");
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printf("ID to be checked: ");
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scanf("%d", &targetID);
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for (i = 0; i < count; i++) {
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if (targetID == students[i].ID) {
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printf("ID:%d; Name: %s; Sex:%s; Birthday:%d/%d/%d; Score:%lf\n", students[i].ID, students[i].name, students[i].sex?"FEMALE":"MALE", students[i].birthday.year, students[i].birthday.month, students[i].birthday.date, students[i].score);
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return;
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}
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}
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}
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int main() {
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STUDENT students[10];
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int i = 0;
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int count = 3;
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char mode;
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// freopen("fakedata","r",stdin);
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printf("Select: (S)ave/(L)oad ");
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scanf("%c", &mode);
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if (mode == 's' || mode == 'S') {
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saveStu(students, count);
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}
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else if (mode == 'l' || mode == 'L') {
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loadStu(students, count);
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}
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return 0;
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}
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