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(2 )
: ++
:
3..
4..
5.++
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A B BYY |
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1. . ++ :
_1
_2
_N
main.
:
void main()
{ ;
;
}
.
.
1. : , b, — . S —
. :
— .
#include <stdio.h> #include <math.h> void main ()
{float a, b, c, p, s; printf("\na="); scanf("%f",&a); printf("\nb="); scanf("%f",&b);
1

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printf("\nc="); scanf("%f",&c); |
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p=(a+b+c)/2; |
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s==sqrt ( (p - c)); |
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printf(" =%: ", s); |
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} |
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. , |
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main. void |
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. double. |
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— . |
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, , . |
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« » ++ |
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i++;
,
.
: ( ) (s).
sqrt()
—( ).
.
#include <math.h>. math.h —
. . 3
.
3
( math.h)
2

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printf (...); scanf (...);
.
,
stdio.h.
printf() :
printf( , );
(
) , , ,
.
, ( ).
1 printf ("\n ="); (" =") ("\n"),
. , .
, , , .
3

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B BYY |
|
, , \. :
printf (" =% f", s);
printf. s.
. %f s, .
% — , f , , ,
(real) ( ) .
, s 32,435621,
:
=32.435621
,
. :
,
: m=84.299999 k=-12 p=3.21500e+01
, ,
, . ,
.
4

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— , , |
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% .
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r |
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|
B BYY |
|
:
, , ,
.
:
scanf() :
scanf( , );
, ,
.
scanf() .
1 : scanf("%f",&a);
"%f" — ; — ,
. .
,
scanf(), . scanf()
, ,
, .
— , ,
&. « ».
5

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( |
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%, |
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.c |
|
B BYY |
|
.
: d — ( int);
u — ( unsigned int);
f — ( float) ;
— ( float) .
. — ,
, , .
printf(), scanf()
h, l, L.
:
hd — short int; ld — long int;
lf, le — double
;
Lf, Le — long double
.
1 , b, c :
scanf("%f%f%f",&a,&b,&c);
:
5 3.2 2.4 <Enter>
: = 5,0, b = 3,2, = 2,4.
,
: , .
Enter , , .
.
6

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++. |
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w. . |
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A BBYY |
c |
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AB
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F Tran |
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o |
||
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A B BYY |
c |
|
|||
|
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|
++,
, stdio.h,
. ++
,
iostream.h.
:
in — ; cout — .
in
. ++
, >>. ,
cin>>x;
cout
, . , ,
. <<.
: cout<<a+b;
ut<<"\n ="<<Y; cout<<"x="<<x<<" y="<<y<<" z="<<z<<endl;
,
, , printf();
<<. endl
, (
\n, ).
.
.
,
setf(). , , ,
.
.
1
++.
7

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8