Question

c语言程序运行出错，求帮忙。编译没错，运行得不到正确结果。

# include <stdio.h>
# include <stdlib.h>
struct Student{
int num;
char name[10];
int score;
}stud;
void main(){
FILE * fp1;
FILE * fp2;
if((fp1=fopen("G:\\student.txt","w"))==NULL){
printf("can not open the file");
exit(0);
}
printf("please enter information:\n");
do{
fwrite(&stud,sizeof(struct Student),1,fp1);
scanf("%d %s %d",&stud.num,stud.name,&stud.score);

}while(stud.num==0);
fclose(fp1);
if((fp2=fopen("G:\\student.txt","rb"))==NULL){
printf("can not open the file");
exit(0);
}
while(!feof(fp2)){
fread(&stud,sizeof(struct Student),1,fp2);
printf("%d %s %d\n",stud.num,stud.name,stud.score);
fclose(fp2);
}
}

Answer 1

# include <stdio.h>
# include <stdlib.h>扒含宏
struct Student{
	int num;
	char name[10];
	int score;
}stud;
void main(){
	FILE * fp1;
	FILE * fp2;
	if((fp1=fopen("G:\\student.txt"春册,"wb"))==NULL){ //要wb
		printf("can not open the file");
		exit(0);
	}
	printf("please enter information:\n");
	do{
		fwrite(&stud,sizeof(struct Student),1,fp1);
		scanf("%d %s %d",&stud.num,stud.name,&老慧stud.score);
	}while(stud.num!=0); //不为0时循环
	fclose(fp1);

	if((fp2=fopen("G:\\student.txt","rb"))==NULL){
		printf("can not open the file");
		exit(0);
	} 
	while(1){
		fread(&stud,sizeof(struct Student),1,fp2);
		if ( feof(fp2) ) //先读后检查
			break ;
		printf("%d %s %d\n",stud.num,stud.name,stud.score);
	}
	fclose(fp2); //关闭不要在循环中
}

追问

能运行吗，我现在没法用电脑，打不了

追答

已测试通过，可以运行

Answer 2

把错误问题是什么说出来呀！

追问

输入数据之后enter输出的是000