บทที่ 1

#include
#include
void main()
{
int ch1;
do
{
clrscr();
cout<<"\n Program By : pratya wutticho "<cout<<" No : 8 "<cout<<"************************************\n"<cout<<" Unit 1 "<cout<<" [1] Page 5 "<cout<<" [2] Page 12 "<cout<<" [3] Page 13 "<cout<<" [4] Page 14 "<cout<<" [5] Page 15 "<cout<<" [6] Page 16 "<cout<<" [7] Page 17 "<cout<<" [8] Page 20 "<cout<<" [9] Page 21_1 "<cout<<" [10] Page 21_3 "<cout<<" [0] Back To Manu \n "<cout<<"************************************"<cout<<"\nPlease Select [0-10] : ";
cin>>ch1;
switch(ch1)
{
case 1 :clrscr();
cout<<"\n Program By : pratya wutticho "<cout<<" No : 8 "<cout<<"Office : Computer Department,RIPA";
getch();
break;
case 2 :clrscr();
cout<<"Size of char = "<cout<<"Size of unsigned char = "<cout<<"Size of int = "<cout<<"Size of unsigned int = "<cout<<"Size of short int = "<cout<<"Size of long = "<cout<<"Size of unsigned long = "<cout<<"Size of float = "<cout<<"Size of double = "<cout<<"Size of long double = "<getch();
break;
case 3 :float sale,price;
clrscr();
sale = 500.25;
price = 5.25;
float total = sale*price;
cout<<"Total Sale = "< getch();
break;
case 4 :int number1;
float sales1,purchase1;
//set value of variable
number1 = 50;
sales1 = 5000.75;
purchase1 = 3500.50;
clrscr();
//show varlue from variable
cout<<"show varlue of variable"<cout<<"number ="<cout<<"sales ="<cout<<"purchase ="<getch();
break;
case 5 :int number2 = 500; //declaration and set value variable
float sales2 = 500.50, purchase2 = 3500.75;//declaration and set value variable
clrscr();//function clear screen from
//show varlue from variable
cout<<"show varlue of variable"<cout<<"number ="<cout<<"sales ="<cout<<"purchase ="<getch();
break;
case 6 :int grade1,midterm1,final1,total1;//define globaland locat variable in function main() local
clrscr();
midterm1=30;
final1=50;
total1=midterm1+final1 ;
grade1 ='A';
cout<<"You get total scare"<cout<<"\n";
cout<<"\n Program By : pratya wutticho "<cout<<" No : 8 "<cout<<"\n";
cout<<"------------------------------\n";
cout<<"\n";
cout<<"Display Logic Operation:\a";
cout<<"\nLogic value of expression(3==5) : "<<(3==5);
cout<<"\nLogic value of expression(5==5) : "<<(5==5);
cout<<"\nLogic value of expression(3<=5) : "<<(3<=5);
cout<<"\nLogic value of expression(3>=5) : "<<(3>=5);
cout<<"\nLogic value of expression(3<=5)&&(5>3) : "<<((3<=5)&&(5>3));
cout<<"\nLogic value of expression((3<=5)&&(3>5)) : "<<((3<=5)&&(3>5));
cout<<"\nLogic value of expression((3<=5)||(3>5)) : "<<((3<=5)||(3>5));
cout<<"\nLogic value of expression((8<=5)||(3>=5)) : "<<((8<=5)||(3>=5));
cout<<"\n\nValue 1 is true,0 is false ...press any key";
getch();
break;
case 9 :int A1=50,B1=30,C1=5,D1=3,E1=10;
clrscr();
cout<<"------------------------------\n";
cout<<"\n";
cout<<"\n Program By : pratya wutticho "<cout<<" No : 8 "<cout<<"\n";
cout<<" NO : 11\n";
cout<<"\n";
cout<<"------------------------------\n";
cout<<"\n";
cout<<"1.1 (A+B)*(E-D) = "<<(A1+B1)*(E1-D1);
cout<<"\n\n1.2 ++D+C*E = "<<++D1+C1*E1;
cout<<"\n\n1.3 (25+A)/C+B = "<<(25+A1)/C1+B1;
cout<<"\n\n1.4 A*-D = "<cout<<"\n\n1.5 20*C+B+++D/2 = "<<20*C1+B1+++D1/2;
cout<<"\n\n1.6 --D+C+B-- = "<<--D1+C1+B1--;
cout<<"\n\n1.7 25*D/5+10 = "<<25*D1/5+10;
cout<<"\n\n1.8 A+B--+D = "<cout<<"\n\n1.9 C*2+E*5 = "<cout<<"\n\n1.10 (A*2)+B/C-15 = "<<(A1*2)+B1/C1-15;

cout<<"\n\n------------------------------\n";
getch();
break;
case 10 :int A2=20,B2=30,C2=2,D2=5,E2=50;
clrscr();
cout<<"------------------------------\n";
cout<<"\n";
cout<<"\n Program By : pratya wutticho "<cout<<" No : 8 "<cout<<"\n";
cout<<" NO : 11\n";
cout<<"\n";
cout<<"------------------------------\n";
cout<<"\n";
cout<<"Display Logic Operation:\a";
cout<<"\n3.1 Logic value of expression (A>=B)&&(A==A) : "<<(A2>=B2)&&(A2==A2);
cout<<"\n3.2 Logic value of expression (B+C>A+D)||(B+CA2+D2)||(B2+C2cout<<"\n3.3 Logic value of expression (A==20)&&(B>=30) : "<<(A2==20)&&(B2>=30);
cout<<"\n3.4 Logic value of expression (50==E)||(!(D<=E)) : "<<(50==E2)||(!(D2<=E2));
cout<<"\n3.5 Logic value of expression !(D!=5) : "<cout<<"\n3.6 Logic value of expression (B+C+20)!=50 : "<<((B2+C2+20)!=50);
cout<<"\n3.7 Logic value of expression C==(D-3) : "<<(C2==(D2-3));
cout<<"\n3.8 Logic value of expression (A/C<=B)&&(C+D<=A)||(D>A) : "<<(A2/C2<=B2)&&(C2+D2<=A2)||(D2>A2);
cout<<"\n3.9 Logic value of expression (A%C+5)==(E/5-10) : "<<((A2%C2+5)==(E2/5-10));
cout<<"\n3.10 Logic value of expression (Acout<<"\n\nValue 1 is true,0 is false ...press any key";
getch();
break;
}//end of do...while
}//end of switch
while(ch1!=0);
getch();
}