The document contains a series of C++ programming exercises focusing on unary and binary operators, including pre/post-increment and decrement practices, along with operator precedence and variable assignments. It provides example code snippets that demonstrate the effects of these operators when executed, aiming to illustrate fundamental C++ concepts through practical examples. Additionally, the document touches on mathematical operations and expressions transformed into C++ syntax.

1. Lab Manual
IV

2. Pre and Post Practice
#include<iostream.h>
#include<conio.h>
void main()
{
int a,b,c;
a=b=2;
++a;
a++;
a++;
cout<<a;
getch();
}
#include<iostream.h>
#include<conio.h>
void main()
{
int a,b,c;
a=2; b=2;
++b;
b++;
a++;
a++;
cout<<a<<b;
getch();
}
Output of
a
Output of
a
b

3. Pre and Post Practice
#include<iostream.h>
#include<conio.h>
void main()
{
int a,b,c;
a=b=8;
--a;
a--;
--a;
a--;
cout<<a;
getch();
}
#include<iostream.h>
#include<conio.h>
void main()
{
int a,b,c;
a=4; b=4;
--b;
b--;
a--;
a--;
cout<<a<<b;
getch();
}
Output of
a
Output of
a
b

4. Unary with cout

5. Use of Unary Operators with cout
Output as
4
5
Output as
4
5
Output as
4
5

6. Pre and Post Practice
#include<iostream.h>
#include<conio.h>
void main()
{
int a,b,c;
a=b=8;
cout<<--a;
cout<<--a;
cout<<a--;
cout<<a;
getch();
}
#include<iostream.h>
#include<conio.h>
void main()
{
int a,b,c;
a=4; b=4;
cout<<b--;
cout<<b--;
cout<<b--;
cout<<b;
getch();
}

7. Pre and Post Practice
#include<iostream.h>
#include<conio.h>
void main()
{
int a,b,c;
a=b=8;
cout<<--a;
cout<<a--;
cout<<a--;
cout<<a--;
getch();
}
#include<iostream.h>
#include<conio.h>
void main()
{
int a,b,c;
a=4; b=4;
cout<<b--;
cout<<b;
cout<<b--;
cout<<++b;
cout<<b;
getch();
}

8. Pre and Post Practice
#include<iostream.h>
#include<conio.h>
void main()
{
int a,b,c;
a=b=8;
--a;
a++;
cout<<a--;
cout<<--a;
getch();
}
#include<iostream.h>
#include<conio.h>
void main()
{
int a,b,c;
a=4; b=4;
b--;
b++;
b--;
cout<<++b;
cout<<b--;
cout<<b
getch();
}

9. Unary Practice with
Assignment statement

10. Use of Unary Operators into = statement
Output as
c=4
d=5
Output as
c=4
d=5
Output as
c=4
d=5
b=6

11. Use of Unary Operators in = statement
Output as
D=8
E=11
A=12
Output as
D=8
E=11
A=12
B=7

12. Pre and Post Practice
#include<iostream.h>
#include<conio.h>
void main()
{
int a,b,c;
a=b=8;
a = b++;
a = a+2;
++a;
b = a++;
cout<<a<<b;
getch();
}
#include<iostream.h>
#include<conio.h>
void main()
{
int a,b,c;
a=b=8;
b = ++b;
a = a++;
a--;
b = --a;
cout<<a<<b++;
getch();
}

13. Pre and Post into Expression
#include<iostream.h>
#include<conio.h>
void main()
{
int a,b,c;
a=b=8;
c = a + ++a + ++a;
cout<<a<<c;
getch();
}
#include<iostream.h>
#include<conio.h>
void main()
{
int a,b,c;
c = ++b + --b + b++;
cout<<b<<c;
getch();
}

14. Pre and Post Expression
#include<iostream.h>
#include<conio.h>
void main()
{
int a,b,c;
a=b=8;
a = b + ++a + ++b;
cout<<a<<b;
getch();
}
#include<iostream.h>
#include<conio.h>
void main()
{
int a,b,c; a=b=c=4;
a = ++a + --a + b++;
cout<<a<<b;
getch();
}

15. Pre and Post Expression
}
#include<iostream.h>
#include<conio.h>
void main()
{
int a,b,c; a=b=c=4;
a = ++a + --a + b++;
}
#include<iostream.h>
#include<conio.h>
void main()
{
int a,b,c;
a=2; b=1;
a = ++b + a++;
b= b + ++a - ++b;
cout<<a<<b;
getch();
b = a-- + a-- + ++b + b;
cout<<a++<<b++;
cout<<a<<b;
getch();

16. Transform Expression into C++ Format
Mathematics Operator in C++ Example
+ + 2+4 =6
- - 4-2 = 2
X * 2*3 =6
/ 4/2 = 2
% (Percentage) % (Remaining) 10%2 = 0
32 3*3 or 3^3 or Power (3,2) 2^3 = 8
Sqrt (9) Sqrt (9) = 3

17. Transform Expression into C++ Format
Mathematics C++ Format
2+3+4 2+3+4
2-6-5 2-6-5
2X3 2*3
4/2
4%2 4%2
32 3*3
Sqrt (9)

18. Transform Expression into C++ Format
Mathematics Exp C++ Exp
2*3+4*10/2
3X6-33+7 3*6-(3*3*3)+7
32 Power (3,2)
3*5-Sqrt (9) + (3^2)

19. Transform Expression into C++ Program
Mathematics C++
2*3+4*10/2
#include<iostream.h>
#include<conio.h>
void main ( ) {
int a,b,c,d,e, ans;
a=2; b=3; c=4; d=10; e=2;
ans= a*b+c*d/e;
cout<<“answer=“<<ans;
getch(); }

20. Transform Expression into C++ Program
Mathematics C++
3X6-33+7 3*6-(3*3*3)+7
#include<iostream.h>
#include<conio.h>
void main ( ) {
int a,b,c,d,e, ans;
a=3; b=6; c=7;
exp= a*b-(a*a*a)+c;
cout<<“answer=“<<exp;
getch(); }

21. Transform Expression into C++ Program
Mathematics C++
3*5-Sqrt (9) + (3^2)
#include<iostream.h>
#include<conio.h>
#include<math.h>
void main ( ) {
int a,b,c,d,e, ans;
a=3; b=5; c=9; d=3; e=2;
exp= a*b-sqrt(c)+ (d^2);
cout<<“answer=“<<exp;
getch(); }

22. Operator Precedence
Read expression from Left to Right
1. ( )
2 * , /, %
3 + , -

23. Solve Expression using Operator Precedence
Question Output
2 + 3 * 4 / 2+10 ?
( ( 2 + 3 ) * 4 / 2 + 10 ) ?
2 + 4 – 3 * 2 / 2 -10 % 2 + power(2,5) ?
( ( (5*(2+4) %2 )+10 )- sqrt (49) ) ?
(3 * 2 / 2 -10 % 2 + (5^2) ) ?

24. Solve Binary Operators in Expression
Output as
5 Output as
-3

25. Variable as a Constant
Output as
a=5
p=5
Output as
a=5
p=5

26. Constant Variable Value not Change
DEVC++
Output as
a=5
p=5
DEVC++
Output as
-15.6

27. Input Value at Run Time Screen
 If we want to input value at run time
cout<<a; cin>>a;
cout<<a<<b<<c; cin>>a>>b>>c;

28. Input at Runtime Screen
Using Turbo C++
a=5
Runtime screen
5 //input value & press
enter
a=5
Runtime screen
10 //input value &
press enter
a=10

29. Message before Input at Runtime Screen

30. More Input at Runtime Screen

31. More Input at Runtime Screen

32. Enter value at run time