Input and output of the TXT file with c language

This part is most of the reference from two blog: blog 1 , blog 2
for how the input output problem, there are several important points

#include<stdio.h>
#include<string.h>
int main()
{
	char str1[100];//这个数组是用于输入文件
	FILE *fpWrite=fopen("data.txt","w");//创建一个文件类型的指针，对文件以可写的权限打开
	if(fpWrite==NULL)
		return 0;
	printf("请输入你要写进data文件的内容:");
	gets(str1);//输入对应数据
	for(int i=0;i<strlen(str1);i++)
		fprintf(fpWrite,"%c",str1[i]);//打印显示出刚刚写入的文件
	fclose(fpWrite);//将创建的指针删除
	char str2[100];
	FILE *fpRead=fopen("data.txt","r");//创建一个文件类型的链接以可读的方式打开
	if(fpRead==NULL)
		return 0;
	int i=0;
	printf("data文件中的内容是:");
	while(fscanf(fpRead,"%c",&str2[i])!=EOF)//输入内容
	{
		printf("%c",str2[i]);
		i++;
	}
	printf("\n");
	getchar();
	return 1;
}