救救孩子吧，C的文件和结构体？

Question

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

FILE *fp;

struct student {
	char name[20];
	int age;
	char has;
} STU1;

int main()
{
	errno_t frp;

	if (fp==NULL)
	{
		frp = fopen_s(&fp,"awd.txt", "w+");
	}
	else
	{
		frp = fopen_s(&fp, "awd.txt", "rw+");
	}

	scanf_s("%s", &STU1.name,20);
	scanf_s("%d", &STU1.age);
	scanf_s("%s", &STU1.has,20);


	if (fp == nullptr) {
		return EOF;
	}
   |-------------------------------------------------------|
   |fprintf(fp,"%s%d%s", STU1.name, STU1.age, STU1.has);   |
   |--------------------------------------------------------
	fclose(fp);
	return 0;
}

用的VS2019，只有分隔符报错(源代码没分隔符)

Answer 1

fprintf(fp,"%s%d%s", STU1.name, STU1.age, STU1.has);

改成fprintf(fp,"%s%d%c", STU1.name, STU1.age, STU1.has);

scanf_s("%s", &STU1.has,20);改成scanf_s("%c", &STU1.has,1);

scanf_s("%s", &STU1.name,20);改成scanf_s("%s", STU1.name,20);