?etat??p? ??f??se?? se C

1
?etat??p? ??f??se?? se C

• m2 - n2
• ax2 bx c
• -b 4ac
• 2ab
• cd
• ((-a)b) ((-c)d)

2
?etat??p? ??f??se??

• m2 - n2 mm - nn ? (mm)-(nn)
• ax2 bx c axx bx c
• -b 4ac -b 4 a c
• 2ab (2ab)/(cd)
• cd
• ((-a)b)((-c)d) -ab -cd

3
?p????? ??p?? ?ed?µe???

• ?a??te? se e?a s???e??
• ?a???, ?a?a
• ?µßad?, ?????
• ???µa
• ????µ?? ?a?t?t?ta?

4
?p????? ??p?? ?ed?µe???

• ?a??te? se e?a s???e?? int
• ?a???, ?a?a float, double
• ?µßad?, ????? float, double
• ???µa char (string)
• ????µ?? ?a?t?t?ta? int

5
?a??de??µa

• ?????aµµa p?? ?p??????e? t? a????sµa, d?af??a,
  ????µe??, p????? ?a? modulo ??a d?? a?e?a????
  a???µ???. ?? d?? a???µ?? p?epe? ?a d?aßast??? ap?
  t?? ???st?.

6
include ltstdio.hgt main() int numbera,
numberb / inputs/ int sum, difference,
product, ratio, modulo /results/ printf(Ente
r two integer numbers ) /get
data/ scanf(dd,numbera, numberb) sum
numbera numberb / compute
results/ difference numbera -
numberb product numbera numberb ratio
numbera / numberb modulo numbera
numberb / display output / printf(The sum
of d and d is d\n,numbera, numberb,sum)
printf(The difference of d and d is
d\n,numbera, numberb,difference) printf(The
product of d and d is d\n,numbera,
numberb,product) printf(The ratio of d and d
is d\n,numbera, numberb,ratio) printf(The
mod of d and d is d\n,numbera,
numberb,modulo)
7
?a?ade??µa

• G?a?ete p????aµµa p?? ?p??????e? ?a? t?p??e? t??
  pe??µet?? ?a? eµßad? e??? ??????. ?? µ???
  ded?µe?? e??a? ? a?t??a t?? ?????? se µet?a.

8
/ program that computes the perimeter and area
of a circle/ include ltstdio.hgt define
PI 3.14259 /program constant/ main() float
radius / variable for input data/ float
perimeter, area /variable for output
data/ /GET INPUT DATA/ printf(This program
computes the area and perimeter of a
circle\n) printf(Enter radius of a circle in
meters ) scanf(f,radius) /COMPUTE
PERIMETER AND AREA/ perimeter 2 PI
radius area PI radius radius /PRINT
RESULTS/ printf(A circle with radius f m has
perimeter f m and area f sq. m\n, radius,
perimeter, area)
9
E????? (selection)

• S?????? e?? if
• S??ta??
• if (e?f?as?)
• e?t???
• if (e?f?as?)
• e?t???
• ..

10
E????? (selection)

• S?µas?a ea? ? e?f?as?(s??????) pa???e? t?µ?
  d?af??? t?? µ?de? t?te e?te????ta? ??
  e?a?t?µe?e? e?t??e? a????? s??e??se µe t??
  e?t??e? p?? a?????????? t? if block
• if (length lt 0)
• printf(error length should be possitive\n)
• exit(0)

11
??f?as? S???????

• S?????t???? te?este? (int, char, float, double)
• gt lt gt lt
• p? agtb, altb, a gtb, altb, a b
• S?µas?a ea? s?????s? ?s??e? ? t?µ? t?? e?f?as??
  e??a? 1 a????? 0

12

• int number, count
• ..
• if (number lt 0)
• count count 1
• printf(d\n, count)
• .
• number count output
• 2 3

13
?pa?a???? (repetition)

• ??t??? while
• S??ta??
• while (e?f?as?)
• e?t???
• while (e?f?as?)
• e?t???
• ..

14
while (s??)

• S?µas?a ?s?? ? t?µ? t?? e?f?as?? (s???????)
  e??a? d?af??? t?? µ?de? e?te?a t?? e?a?t?µe?e?
  e?t??e? a????? s??e??se µe t?? e?t??e? p??
  a?????????? t? while block
• int x0
• while(xlt5)
• printf(d\n,x)
• x x 1

15
while (s??)

• x xlt5 output

16
while (s??)

• x xlt5 output
• 0 1 0
• 1 1 1
• 2 1 2
• 3 1 3
• 4 1 4
• 5 0

17
while (s??)

• int x
• x0
• while(xlt5)
• / do something using x/
• x x 1

18
?p?s??

• ???e ??f?as? st?? C pa???e? t?µ? (t?p??)
• Programming ?lock
• d???s?d???s? e?t??? e?t???
• ??f?ase??
• a 3 a ((t x)/e) p
• b PI square(radius)
• if (size(list) b)...
• while (x lt (ab))...

19
Programming Block
void main() / d???se?? ?a? e?t??e?
/ while(/some test condition/) / d???se??
?a? e?t??e? / if(/some test
condition/) / d???se?? ?a? e?t??e? /
20
G?a?ete e?a p????aµµa p?? t?p??e? t??? a?e?a????
a???µ??? ap? t? -10 µe??? t? 10. ? ?a?e a???µ??
?a t?p??eta? se ?e????st? ??aµµ?.
21
include ltstdio.hgt main() int i / loop
counter / i -10 while(ilt10) printf(d\
n,i) i i 1
22
G?a?ete e?a p????aµµa p?? t?p??e? t??? a?e?a????
a???µ??? ap? t? 1 µe??? t? 12. ?a?e a???µ?? p??
d?a??e?ta? µe t? 3 ?a t?p??eta? d?p?a t??. ?
?a?e a???µ?? ?a t?p??eta? se ?e????st? ??aµµ?.
23
include ltstdio.hgt main() int i / loop
counter / i 1 while(ilt12) printf(d,i)
if((i3) 0) printf() print
f(\n) i i 1
24
Trace Table
i ilt12 i3 (i3) 0 output
?e???? t?µ? t?? i