Examination_IT / Programming bases on With C++
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#include <iostream> |
// AQRQPQ<DK <<Q^-<D<Q^. |
#include <iomanip> |
// ^=; CH?@Ab=;RQBQ<. |
using namespace std; void _tmain()
{
setlocale(LC_CTYPE, "Russian_Russia.1251"); double f = 12345.6789;
cout << "jH^H?Q <>{>FR<>??Q> J@F=Q 12345.6789" << endl;
cout << "i>I aQBCHR@BQ<H?@;......................" << f << endl;
cout << "‚ ?HbJ?QK ?QRHc@@ ( 4 I?HJ. c@aBD " "AQF=> RQJP@) "
<<scientific << setprecision(4) << f << endl; cout << "‚ ?HbJ?QK ?QRHc@@ ( 8 I?HJ. c@aBD AQF=> "
"RQJP@) "
<<scientific << setprecision(8) << f << endl; cout << "‚ ?HbJ?QK ?QRHc@@ (12 I?HJ. c@aB AQF=> "
"RQJP@) "
<<scientific << setprecision(12) << f << endl; cout << "l A=H<Hm{>K RQJPQK ( 2 I?HJ. c@aBD AQF=> "
"RQJP@) "
<<fixed << setprecision(2) << f << endl;
cout << "l A=H<Hm{>K RQJPQK ( 6 I?HJ. c@aB AQF=> " "RQJP@) "
<<fixed << setprecision(6) << f << endl; cout << endl;
int n = 689;
cout << "jH^H?Q c>=Q> J@F=Q 689" << endl;
cout << "i>I aQBCHR@BQ<H?@;......................."
<<n << endl;
cout << "‚D<Q^ F Q9;IHR>=f?DC bPHIH?@>C I?HPH..... |
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<< showpos << n << endl; |
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cout << "‚D<Q^ F IHAQ=?@R>=>C + FABH<H............ |
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<< setfill('+') << setw(15) << left << n << |
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endl; |
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cout << "‚ w>FR?H^cHR@B@J?QK F@FR>C>.............. |
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<< hex << n << endl; |
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cout << "‚ <QFC>B@J?QK F@FR>C>.................... |
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<< oct << n << endl; |
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system("pause"); |
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}
72
3.2. 4 / 4/2 ; 4 ; 49U .89 AO/8P99 <628 C++
? - ; =
C++. 5 = , -
. 3.2.
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3 3.2 |
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B = C++ |
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1#$ |
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abs(x) |
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fabs(x) |
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) |
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sin(x) |
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asin(x) |
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cos(x) |
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−#$2 |
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#$2 |
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acos(x) |
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tan(x) |
−1 +1 |
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atan(x) |
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−#$2 |
#$2 |
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exp(x) |
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pow(x,y) |
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log(x) |
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log10(x) |
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sqrt(x) |
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lg ' |
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. . 3.3 -
= C++.
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3 3.3
? = F#
+$ 3 |
4 #$ #$ $ 4# |
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T = 1.0 + pow(3.0, 2.0/3.0)/2.0*x; |
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,(') 1 + |
3 ' |
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2 |
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R = 1.0 + 3.2*3.2/2.0/log10(x); |
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3,2 |
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2012' |
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F = 5.0 + q*pow(b, -2.2)/2.0/a; |
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3(') 5 + |
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4 , |
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Q = 2.0*sqrt(a*a + |
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3.0/4.0/x/x/x); |
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5(') 2 |
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4' |
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x2 = x*x; |
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7(') 1 + |
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35,456' |
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Z = 1. + 35.456*x2/(Fos(x) + |
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x2*x2/5.0*sin(x)); |
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cos' + |
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Sinx2 = sin(x)* sin(x); |
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5 |
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S = pow((sinx2 + |
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>(') ?;<= ' + cos' |
a* cos(x*x)), 1.0/3.0); |
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3.1 |
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(') 1 + A |
35,456' |
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Bcos' − |
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5 sin 'B |
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' 5.675 ∙ 10 .
! =, -
' =. 5 , - d = pow:
double |
x = 5.675e-3; |
// |
HBdbC>?R. |
double |
x2 = pow(x, 2); |
// |
<DJ@F=>?@> P<H^BHRH HBdbC>?RH x ab?Pc@@. |
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/ d -
Z==, , Z ; -
:
double |
x = 5.675e-3; |
// HBdbC>?R. |
double |
x2 = x*x; |
// <DJ@F=>?@> P<H^BHRH HBdbC>?RH x |
ab?Pc@@. |
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. = -
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x2, ; -
: x2*x2.
3 , ;@ Z ,
3.2, . 3.2.
8 58 9 3.3. !6:; Ex03_02.cpp
#include "stdafx.h" |
// ^=; setlocale. |
#include <locale.h> |
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#include <iostream> |
// AQRQPQ<DK <<Q^-<D<Q^. |
#include <iomanip> |
// ^=; CH?@Ab=;RQBQ<. |
#include <cmath> |
// ^=; CHR>CHR@J>FP@E ab?Pc@@. |
using namespace std; |
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/////////////////////////////////////////////////////////
//
double func(double x)
{
double x2;
x2 = x*x; // <DJ@F=>?@> P<H^BHRH HBdbC>?RH x
//ab?Pc@@.
//‚DJ@F=>?@> ab?Pc@@.
f = 35.456 * x2 / fabs(cos(x) - x2 * x2 / 5.0 * sin(x));
return 1.0 + sqrt(f);
}
/////////////////////////////////////////////////////////
//
void _tmain()
{
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setlocale(LC_CTYPE, "Russian_Russia.1251");
//89:;<=>?@> A>B>C>??DE @ @E ?HJH=f?H;
//@?@c@H=@IHc@;.
double x = 5.675e-3; // HBdbC>?R.
double f; |
// |
I?HJ>?@> ab?Pc@@. |
f = func(x); |
// |
<DJ@F=>?@> ab?Pc@@. |
//‚D<Q^ B>Ib=fRHRQ< < QP?Q AB@=Qk>?@;. cout << fixed << setprecision(16)
<<"f(" << x << ") = " << f << endl;
//†^>C ?HkHR@; =m9QK P=H<@w@ P=H<@HRbBD. system("pause");
}
D. 3.2. D Ex03_02
76
4. I W X W
: (
). / d Z
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= - , Z -
. 4.
., . 4.1 = -
,
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B |
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9 - |
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D. 4.1. - -
, =
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, , -.
77
4.1. 5 40 2 . 1/ /9<
/ – Z, , ;- @ : d, d, .
. . 4.1 C++.
3 4.1 /
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B |
>d
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>= |
d |
<= |
` d |
/ >, >=, <, <= ; ,
; == !=, ;@ .
:
@ ; .
. Z ; 1, -
, 0, . ? Z, :
cout << (10>9);
1,
cout << (10 == 9);
0.
78
4.2. 0:9U .89 05 40 2
f – , ;@ -
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, ;@ bool.
. . 4.2 C++.
3 4.2 f
C+
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&&:
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!B
3, ;@ , -
( . 4.3).
3 4.3
3 ,
C++
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x && y |
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!x |
!y |
false |
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true |
false |
false |
. , ,
@ ; 1, true ( ),
0, false ( ). ? Z,
cout << ((10>9) && (3<23) && (4==4));
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1.
? && || d
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, ;; -
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cout << (10>9 && 3<23 && 4==4);
) /
– Z ,
;@ 1 (true) 0 (f alse).
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s ,
Š ‚ .
D d: A%2 !=0 && B%2 !=0
s , ,
- . ; .
D d: A*B > 0
s , , Š
. D d:
Š%4 == 0 && A/10*10 == A
80
s , , -
', D d ; ( . 4.2).
D d: x>1 && y>2 && y<3
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d ; ( . 4.2). |
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D d: |
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x<1 || y<2 || y>3 |
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x |
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D. 4.2. ! - |
1 < x < 10 |
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C++ d-
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1 < x && x < 10
7 bool
3 bool -
: true
false, Z: 1 0.
bool flag1, flag2, flag3, flag4; flag1 = true;
flag2 = 5>4; flag3 = 1; flag4 = (5==8);
cout << flag1 << " " << flag2
<< " " << flag3 << " " << flag4 << " " << endl;