The document discusses basic C programming concepts like data types, operators, precedence, assignments, and increment/decrement operators. It explains: 1) Common data types in C like int and float. 2) Arithmetic operators like +, -, *, /, and modulus %. It also covers increment/decrement operators ++ and --. 3) Operator precedence which determines the order of operations in an expression. 2) Simple and compound assignments using =, +=, -=, *=, /=, and %= operators. 3) The difference between prefix and postfix increment/decrement operators and their order of operations.

1. 4
(Expressions)
(Operand)
(Operator)
[ [ [
A+B
2+A
C
4.1
+
-
*
/
% Modulus
++ 1
--
1
2
2
2 3 5 25
2+3*5
17 C

2. (Precedence) 3 5 15
2 17
C
(2 + 3) * 5
2 3 5 5 25
4.2 (
++,-- 16
- ( 15
*, /, % 13
+, - 12
10 / 2 * 3 10 2 5 3 15
((5 + 3) * (9 - 2)) + 3 5 3 8 9 7 5 7 12
12 3 15
12 * 2 + (2 * 6) 2 6 12 12 2 24 24
12 36

3. 4-1

4. [
Simple Assignments (
Simple Assignments
A=2
Sum = 2 + A
Sum = (2 * 5) + 6
Simple Assignments
y
x
10 5 x=y +2 7 x=7
10 5 x=x /y 2 x=2
10 5 x=y % 4 1 x=1

5. 4-2
Compound Assignments (
Compound Assignment Simple Assignment
5 *=, /=, %=, +=
4-3
Simple
Compound
x*=y x = x* y
X/=y X = x/y
X%=y X =x %y
X+=y X = x+y
X - =y X =x-y
Simple Assignments
y
x
10 5 x*=y 50 X = 50
10 5 X/=t 2 X = 2
10 5 X%=y 0 X = 0
10 5 X+=y 15 X = 15
10 5 X-=y 5 X = 5

6. 4.3
++ --
++ 1 --
1 2 2
Postfix
[

7. A ++
A–
Postfix x = a++
1. x=a
2. a=a+1
y = b--
1. y=b
2. b=b–1
a
a
10 a++ 10 11
10 a-- 10 9
4-4 ++ Postfix
/imgs/clip_image004_0003.gif
Prefix
[ [
++a
--a
Prefix x = ++a
1. a=a+1
2. x=a
y = --b
1. b = b-1
2. y=b
a
a
10 ++a 11 11
10 --a 9 9

8. 4-5 ++ Prefix