166.c

C++游戏开发书籍的实例非常适合初学但又又想往游戏开发方面发展的人学习哦

#include<stdio.h>
#include<string.h>
#include<conio.h>
#include<ctype.h>
unsigned char xx[50][80];
int maxline=0;/*文章的总行数*/
int ReadDat(void);
void WriteDat(void);
void encryptChar()
{
	int I;
	char *pf;
	for(I=0;I<maxline;I++)
	{pf=xx[I];
	while(*pf!=0)
	{if(*pf*11%256>130||*pf*11%256<=32);
	else
	*pf=*pf*11%256;
	pf++; }
	}
}
void PressKeyToQuit()
{
	printf("\n Press any key to quit...");
	getch();
	return;
}
void main()
{
	clrscr();
	if(ReadDat())
	{
		printf(" Can't open file IN166.DAT!\n");
		return;
	}
	encryptChar();
	WriteDat();
	PressKeyToQuit();
}
int ReadDat(void)
{
	FILE *fp;
	int i=0;
	unsigned char *p;
	if((fp=fopen("in166.dat","r"))==NULL) return 1;
	while(fgets(xx[i],80,fp)!=NULL)
	{
		p=strchr(xx[i],'\n');
		if(p)*p=0;
		i++;
	}
	maxline=i;
	fclose(fp);
	return 0;
}
void WriteDat(void)
{
	FILE *fp;
	int i;
	fp=fopen("out166.dat","w");
	for(i=0;i<maxline;i++)
	{
		printf("%s\n",xx[i]);
		fprintf(fp,"%s\n",xx[i]);
	}
	fclose(fp);
}