cezar.cpp

来自「This is a little source code of encrytio」· C++ 代码 · 共 58 行

#include <stdio.h>
#include <string.h>
#include <conio.h>
#include <stdlib.h>
int main(void)
{	
	unsigned int i,j,t;
	bool temp;
	char ch;
	char alpfa[53];
	char zapa[53];
	char str[1000];
	char result[1000];
do{ t=0; temp=1;
	strcpy (str,"");
	strcpy (result,"");
	printf ("         ***********MENU**********\n\n");
	printf ("         1. Encoding text\n");
	printf ("         2. Decoding text\n");
	printf ("         3. Exit\n");
	do{	
	printf ("\n         Enter your choice: ");
	ch=getche();} while ((ch!='1')&&(ch!='2')&&(ch!='3'));
	if (ch=='1')
	{
		printf("\n");
		strcpy (alpfa,"abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ");
		strcpy (zapa, "defghijklmnopqrstuvwxyz abcDEFGHIJKLMNOPQRSTUVWXYZ AB");
		printf ("         Please enter text to code:\n\n");
	} else if (ch=='2')
	{
		printf("\n");
		strcpy (zapa, "abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWYZ");
		strcpy (alpfa,"defghijklmnopqrstuvwxyz abcDEFGHIJKLMNOPQRSTUVWXYZAB");
		printf ("         Please enter text to decode:\n\n");
	} else if (ch=='3') {printf ("\n"); return 0;};
	if (gets(str))
	{   
		for (i=0; i<(strlen(str)); i++)
		{	for (j=0;j<strlen(alpfa);j++)
			{	if (alpfa[j]==str[i])
				{
					  t=t+1;
					  result[t-1]=zapa[j];
					  temp=0;
				}  
			}
		if (temp!=0) {t=t+1;
		result[t-1]=str[i]; temp=1;}
		temp=1;
		}
	} 
	for (i=0; i<t; i++)
	printf ("%c",result[i]);
	printf("\n\n");	
} while (1);
}