fopen 和open在linux 里面区别

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

int main()
{
    
    
        FILE *fp;
        char readBuf[128]={
    
    0};
        char *buf="nice move!";

        fp=fopen("./qin.txt","w+");//最后权限这儿一定用双引号（指针）

        fwrite(buf,sizeof(char),strlen(buf),fp);

        fseek(fp,0,SEEK_SET);
        fread(readBuf,sizeof(char),strlen(buf),fp);

        printf("%s\n",readBuf);


        return 0;
}

用下面的代码也可以实现：

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

int main()
{
    
    
        FILE *fp;
        char readBuf[128]={
    
    0};
        char *buf="nice move!";

        fp=fopen("./qin.txt","w+");

        fwrite(buf,sizeof(char),strlen(buf),fp);
//      fwrite(buf,sizeof(char)*strlen(buf),1,fp);//任取一种

        fseek(fp,0,SEEK_SET);
//      fread(buf,sizeof(char),strlen(buf),fp);
        fread(readBuf,sizeof(char)*strlen(buf),1,fp);//任取一种

        printf("%s\n",readBuf);


        return 0;
}