Description and Encription Program

My program …

1	#include <cstdlib>
2	#include <iostream>
3
4	using namespace std;
5	class mtk{
6	private:
7	char plain[128],chiper[128];
8	int key,p, i,j;
9	public:
10	void in();
11	void encrip();
12	void deskrip();
13	};
14	void mtk::in(){
15	cout<<”masukan key : “;
16	cin>>key;
17	cout<<”masukan karakter : “;
18	cin>>plain;
19	p=strlen(plain);}
20	void mtk::encrip(){j=0;
21
22	for (i=1;i<=p;i++){
23	*chiper=(plain[j]+key)%128;
24	cout<<chiper;j++;
25	}}
26	void mtk::deskrip(){j=0;
27	for (i=1;i<=p;i++){
28	*chiper=(plain[j]-key)%128;
29	cout<<chiper;j++;
30	}}
31
32	int main(int argc, char *argv[])
33	{
34	mtk a;
35	a.in();
36	cout<<”encrip : “;
37	a.encrip();
38	cout<<endl<<”deskrip : “;
39	a.deskrip();
40	cout<<endl;
41	system(“PAUSE”);
42	return EXIT_SUCCESS;
43	}

This is the explanation from that program:

• In step 5 I give “class mtk” for the name class.
• I declared the private first in step 7 and 8.
• Then the public in step 10 to 12.
• The attribute and formula for description and encryption in this program there was in steps 14 to 30.
• In step 29 to 40 is the execution for operator overloading.
• Main function in step 32.
• The class name n object called by steps 35 to 40.

Come on to display the output…

Thanks for reading & sharing Agus Nur Ikhsan