data.h

c游戏编程从入门到精通_全部源代码和文档

void Write_To_File(char flag,char *file,int *word)
{
	const char *xy;
	int i=0;
	FILE *stream;
	if ((stream = fopen(file, "w+b")) == NULL)
	{
		fprintf(stderr, "Cannot open output file.\n");
		return 1;
	}
	while(word[i]!=-1)
	{
	itoa(word[i],xy,10);
	fwrite(xy,strlen(xy), 1, stream);
	fputc(flag,stream);
	i++;
	}
	fclose(stream);
}

void Read_From_File(char flag,char *file,int *word)
{
	int i,j=0,k=0;
	char *buf;
	FILE *stream;
	if ((stream = fopen(file, "r+b")) == NULL)
	{
		fprintf(stderr, "Cannot open output file.\n");
		return 1;
	}
	for(i=0;!feof(stream);i++)
	{
		fread(buf,1, 1, stream);
		if(buf[0]==flag)
		{
			fseek(stream,k, SEEK_SET);
			fread(buf,i-k+1,1,stream);
			buf[i-k]='\x0';
			word[j]=atoi(buf);
			j++;
			k=i+1;
		}
	}
	fclose(stream);
}

char *fread_char_seek(char flag,char *file,int num,int seek,char end)
{
	int i,j=0,k=0;
	char *buf;
	FILE *stream;
	if ((stream = fopen(file, "r+b")) == NULL)
	{
		fprintf(stderr, "Cannot open output file.\n");
		return 1;
	}
	fseek(stream,seek,SEEK_SET);
	for(i=0;!feof(stream);i++)
	{
		fread(buf,1, 1, stream);
		if(buf[0]==end)
		{
			buf[1]='\x0';
			fclose(stream);
			return(buf);
		}

		if(buf[0]==flag)
		{
			j++;
			if(j==num)
			{
				fseek(stream, seek+k, SEEK_SET);
				fread(buf,i-k,1,stream);
				buf[i-k]='\x0';
				fclose(stream);
				return(buf);
			}
			k=i+1;
		}
	}
}