我试图搜索包含一组人信息的文件,例如:他们的名字,姓氏和ID。
我提示用户输入他们的ID代码。程序应搜索文本文件并确保其代码与文件中的代码匹配,以便程序可以通过比较文件中的字符串和用户输入的变量来继续。
我不确定如何实现这一点。以下是代码片段:
#include <stdio.h>
#include <conio.h>
#include <string.h>
typedef struct record {
char (fname[3])[20];
char (lname[3])[20];
int code[3];
} information;
int main (void) {
char ffname[20], flname[20];
int fID, i;
FILE *kfile;
if ((kfile = fopen("C:\\Users\\Student\\Downloads\\information.txt","r")) == NULL) {
perror("Error while opening file");
} else {
printf("%-20s %-20s %s\n", "First Name", "Last Name", "ID");
fscanf(kfile, "%19s %19s %d", ffname, flname, &fID);
printf("\n");
while (!feof(kfile)) {
printf("%-20s %-20s %04d\n", ffname, flname, fID);
fscanf(kfile, "%19s %19s %d", ffname, flname, &fID);
}
fclose(kfile);
}
information info;
for (i = 0; i < 3; i++) {
printf("Please enter your ID.");
scanf("%04d", &info.code);
}
getch();
return 0;
}
答案 0 :(得分:0)
我不确定我理解你的问题,但你可以试试这个:
typedef struct record {
char *fname;
char *lname;
int code;
} information;
int main (void) {
char ffname[28], flname[28];
int fID, i, id_;
information array[3];
FILE *kfile;
i = 0;
if ((kfile = fopen("C:\\Users\\Student\\Downloads\\information.txt","r")) == NULL) {
perror("Error while opening file");
} else {
while (!feof(kfile)) {
fscanf(kfile, "%s %s %d", ffname, flname, &fID);
array[i].fname = strdup(ffname);
array[i].lname = strdup(flname);
array[i].code = fID;
i++;
}
fclose(kfile);
}
printf("Please enter your ID: ");
scanf("%d", &id_);
for (i = 0; i < 3; i++) {
if (array[i].code == id_) {
// print the record
printf("%s %s \n", array[i].fname, array[i].lname);
}
}
return 0;
}