C语言实现 撒凯密码 解密

#include<stdio.h>

#include<stdlib.h>
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#include<string.h>



#define N 80



int main(void)

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{

	char message[N];

	char ch;

	int n,i;

	int length;

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	printf("输入要解密的信息:\n");

	gets(message);

	printf("输入位移次数(1-25):\n");

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	scanf("%d",&n);

	printf("\n");



	length = strlen(message);



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	for(i=0; i<length; i++)

	{

		if(message[i]>='A' && message[i]<='Z')

		{

			message[i] = ((message[i]-'A')+n)%26+'A';

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		}

		else if(message[i]>='a' && message[i]<='z')

		{

			message[i] = ((message[i]-'a')+n)%26+'a';

		}👦‌👑📱😫🖕

		else continue;

	}



	puts("解密后的信息:\n");

	puts(message);
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	printf("\n");



	return 0;



}

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