exec sql include sqlca
int main(){
exec sql begin declare section
char userpasswd[30]="openlab/123456"
struct{
int id
char name[30]
double salary
}emp
exec sql end declare section
exec sql connect:userpasswd
exec sql declare empcursor cursor for
select id,first_name,salary from
s_emp order by salary
exec sql open empcursor
exec sql whenever notfound do break
for(){
exec sql fetch empcursor into :emp
printf("%d:%s:%lf\n",emp.id,emp.name,
emp.salary)
}
exec sql close empcursor
exec sql commit work release
}
把数据存到结构体里。
简单的用C读取文件的例子代码片段。... ...
FILE *fp
char buffer[1000]
fp=fopen( "input.txt", "r" )
while ( fread(&buffer, sizeof(buffer), 1, fp )==1)
{
... ...
//对从文件读出来的数据在此处进行处理
... ...
}
fclose(fp)
... ...
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