1.使用fread和fwrite完成两个文件的拷贝

#include<myhead.h>
int main(int argc, const char *argv[])
{
	FILE *fp=NULL;
	if((fp=fopen("./zhanmusi.bmp","r"))==NULL)
	{
		perror("fopen error");
		return -1;
	}

	//fseek(fp,54,SEEK_SET);//3200054
	char str[3200054]="";
	fread(str,1,3200054,fp);
	fclose(fp);


	FILE *fp1=NULL;
	if((fp1=fopen("./zhanmusi","w"))==NULL)
	{
		perror("fopen error");
		return -1;
	}
	fwrite(str,1,3200054,fp1);
	fclose(fp1);

	return 0;
}

2.使用read、write完成两个文件的拷贝

#include<myhead.h>
int main(int argc, const char *argv[])
{
	int fd=-1;
	if((fd=open("./zhangmusilongduo.bmp",O_RDONLY))==-1)
	{
		perror("fopen error");
		return -1;
	}

	//fseek(fp,54,SEEK_SET);//3200054
	char str[1141814]="";
	read(fd,str,1141814);
	close(fd);


	int fd1=-1;
	if((fd1=open("./zhangmusilongduo",O_WRONLY|O_CREAT,0664))==-1)
	{
		perror("fopen error");
		return -1;
	}
	
	write(fd1,str,1141814);
	close(fd1);

	return 0;
}

3.将时间在文件中跑起来

#include<myhead.h>
int main(int argc, const char *argv[])
{
	FILE *fp=NULL;
	if((fp=fopen("./time.txt","a+"))==NULL)
	{
		perror("fopen error");
		return -1;
	}



	FILE *fp1=NULL;
	if((fp1=fopen("./line.txt","a+"))==NULL)
	{
		perror("fopen error");
		return -1;
	}

		int a=0,b,c;
		char str[128]="";
	while(1)
	{
		time_t sysTime=time(NULL);
		struct tm *t=localtime(&sysTime);

		if( fgetc(fp1)==EOF )
			a++;
		else
		{
			a=fgetc(fp1);
			a++;
		}

		fputc(a,fp1);
	
		c=fprintf(fp,"第%d行 %d : %d : %d\n",a,t->tm_hour,t->tm_min,t->tm_sec);

		fseek(fp,-c,SEEK_CUR);
		fgets(str,sizeof(str),fp);
		fputs(str,stdout);
				
		b=t->tm_sec;	
		while(1){
			sysTime=time(NULL);
			t=localtime(&sysTime);
		
			if( (b+1==t->tm_sec) || (b+t->tm_sec==60) )
			break;
		}
	}

	fclose(fp);
	fclose(fp1);

	return 0;
}