代码如下,_if(fwrite(&stu[i],sizeof(struct Student),1,fp)!=1)_这句代码有什么问题吗?
#include<stdio.h>
#include<stdlib.h>
#define SIZE 3
#define LOCALFILE "X:\\c\\test3.txt"
struct Student
{
char name[10];
int num;
int age;
char addr[15];
}stu[SIZE];
void save()
{
FILE *fp;
int i;
if((fp=fopen(LOCALFILE,"w"))==NULL)
{
printf("can not open file.\n");
exit(0);
}
for(i=0;i<SIZE;i++)
{
if(fwrite(&stu[i],sizeof(struct Student),1,fp)!=1)//地址,单个字节大小,字节数,文件指针,读取成功返回1
printf("file write error!\n");
fclose(fp);
}
}
int main()
{
int i;
printf("Please enter data of students:\n");
for(i=0;i<SIZE;i++)
{
scanf("%s%d%d%s",stu[i].name,&stu[i].num,&stu[i].age,stu[i].addr);
}
save();
return 0;
}