网络安全--凯撒密码

//key is -3
#include<stdio.h>
int main()
{
	char s[]="wklv phvvdjh lv qrw wrr kdug wr";
	for(int j=0;j<26;j++)
	{
		for(int i =0;;i++)
		{
			char c=s[i];
			if(c=='\0') break;
			if(c==' ') { putchar(' ');continue;}
			else putchar(c-j) ;
		
		}
		printf("	||	This key is %d.\n",j);
	}
}