C语言之创建文件

#include <stdio.h>
int main(void)
{
	FILE *f = fopen("E:\\test.txt","w");

	fputc('A',f);
	fputs("Hello wrold!",f);

	fclose(f);
	return 0;
}

C语言之读取文件内容

#include <stdio.h>
int main(void)
{
    char a;
    char s[15];
	FILE *f = fopen("E:\\test.txt","r");

    a=fgetc(f);
    fgets(s,14,f);

	fclose(f);

	printf("%c",a);
	printf(s);
	return 0;
}