C程序中如何从文本文件中读取数据到结构体中?

Question

C程序中如何从文本文件中读取数据到结构体中? 例如:struct stu{ int a; int b;} struct stu ss[3]; 文本文件中的数据: 1，2 2，4 3，5 我用fread函数读出来的全是0，请高手帮忙，谢谢!

Answer 1

void
writefile(tree
t)
{
FILE
*fp;
if
(t
==
NULL)
{
return;
}
if
((fp
=
fopen(FILENAME,
"wb"))
==
NULL)
{
printf("can't
open
file
%s\n",
FILENAME);
return;
}
preorder(t,
fp);
fclose(fp);
}
tree
readfile(tree
t)
{
TSTUDENT
r_new;
FILE
*fp;
if
((fp
=
fopen(FILENAME,
"rb"))
!=
NULL)
{
printf("
======Read
from
this
file,
Please
wait...=====\n");
while(fread(&r_new,
sizeof(TSTUDENT),
1,
fp)
==
1)
{
inn
=
(PSTUDENT)malloc(sizeof(TSTUDENT));
*inn
=
r_new;
t
=
insert(defaultIndex,
t);
}
fclose(fp);
}
return
t;
}
/*
关键之处是要注意使用二进制文件,文本文件可能会忽略掉某些字符,导致读取失败,或读到的全是乱码*/