Linux文件编程demo11标准C库打开创建文件读写文件光标移动.c

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

int main()
{
	
	FILE *fp;
	char *str = "longhaiyang hen ai sasa";
	char readBuf[128] = {0};
	fp = fopen("./long.txt","w+");
	
	fwrite(str,sizeof(char),strlen(str),fp);
	
	fseek(fp,0,SEEK_SET);
	
	fread(readBuf,sizeof(char),strlen(str),fp);
	
	printf("read data:%s\n",readBuf);
	
	fclose(fp);
	return 0;
}```