Examination_IT / Programming bases on With C++
.pdf
121
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B |
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Summa = 0; |
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Count = 0 |
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B |
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do |
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s d - |
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do |
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n == 0; |
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Break |
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;. |
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B |
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Continue |
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. Average |
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n < 0; |
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B |
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Summa += n; |
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Average |
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Count++; |
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! |
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! |
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do |
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D. 4.17. - Ex04_10 |
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8 58 9 4.9. !6:; Ex04_10.cpp |
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#include "stdafx.h" |
// ^=; setlocale. |
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#include <locale.h> |
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#include <iostream> |
// AQRQPQ<DK <<Q^-<D<Q^. |
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#include <iomanip> |
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using namespace std;
122
void _tmain()
{
setlocale(LC_CTYPE, "Russian_Russia.1251");
int n; |
// c>=Q> J@F=Q. |
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int Summa = 0; |
// FbCCHRQB. |
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int Count = 0; |
// FJ>RJ@P c>=DE J@F>=. |
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double Average; |
// FB>^?>> HB@aC>R@J>FPQ>. |
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do{ |
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// ‚<Q^ ^H??DE. |
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cout << "n> "; |
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cin >> n; |
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// PQ?>c |
if (n == 0) break; |
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// AQF=>^Q<HR>=f?QFR@. |
if (n < 0) continue;// QRB@cHR>=f?Q> J@F=Q. |
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Summa += n; // <DJ@F=>?@> FbCCD. |
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Count++; |
// b<>=@J>?@> FJ>RJ@PH. |
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} while (true); |
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Average = (double)Summa / Count; cout << "lB>^?>> HB@aC>R@J>FPQ> "
"AQ=Qk@R>=f?DE J@F>=: " << setprecision(16)
<<Average << endl;
//†^>C ?HkHR@; =m9QK P=H<@w@ P=H<@HRbBD. system("pause");
}
5 @ ;. / ;
.
? , d , -
. ? Summa, , -
, . .
Count
. / Z ;
r.
. ,
if (n < 0) continue; |
// QRB@cHR>=f?Q> J@F=Q. |
123
5 n -
, , Z , continue -
-
. : n ,
1.
? break -
= :
Average = Summa / Count;
D. 4.18. D Ex04_10
-* / goto.
F goto :
goto ;
: goto , -
. ` – Z = ;@
.
: goto , - d . / @- ; , -
124
goto, … ;
switch .
. . ? 4
@ «. 4» - d . ? 6 @
«. 6» d . ?
4 6 . B – d .
F goto -
, 4.9.
8 58 9 4.10. !6:; Ex04_11.cpp
#include "stdafx.h" |
// ^=; setlocale. |
#include <locale.h> |
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#include <iostream> |
// AQRQPQ<DK <<Q^-<D<Q^. |
using namespace std; |
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void _tmain()
{
setlocale(LC_CTYPE, "Russian_Russia.1251");
int n; |
// c>=Q> J@F=Q. |
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double |
Summa; |
// FbCCHRQB. |
Summa = 0.0; // Q9?b=>?@> FbCCHRQBH.
// ‚<Q^ ^H??DE @ <DJ@F=>?@;. |
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for (; ; ) |
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{ |
// ‚<Q^ ^H??DE. |
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cout << "n> "; |
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cin >> n; |
// A>B>EQ^ P C>RP>. |
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if (n == 4) goto lab4; |
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} |
if (n == 6) goto lab6; |
// A>B>EQ^ P C>RP>. |
// ŒRQ C>RPH. |
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lab4: |
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cout << "‚<>^>?Q J@F=Q 4"; |
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goto lab; |
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lab6: |
// ŒRQ C>RPH. |
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cout << "‚<>^>?Q J@F=Q 6";
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125 |
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lab: |
// ŒRQ C>RPH. |
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cout << endl; |
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// †^>C ?HkHR@; =m9QK P=H<@w@ P=H<@HRbBD. |
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} |
system("pause"); |
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/ , « » - |
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goto
! ?, ;@ goto, -
; , bowl of spaghetti, 5
, - ,
… - . B -
– =.
. Z
goto.
4.6. ?0\ //2 P98?2
t @ ;
for. F d
for(i=0; i<n1; i++) for(j=0; j<n2; j++)
+_
9 . `
for(i=0; i<n1; i++) for(j=0; j<n2; j++)
for(k=0; k<n2; k++) for(l=0; l<n2; l++)
+_
B , ; ,
:
for(i=0; i<n1; i++)
{
126
@?FRBbPc@;_1; @?FRBbPc@;_2; for(j=0; j<n2; j++)
{
@?FRBbPc@;_3; @?FRBbPc@;_4;
}
@?FRBbPc@;_5; @?FRBbPc@;_6; @?FRBbPc@;_7;
}
4.10
F d-
(' D) ' + D ^ , ', D ^
1 30. D d, ; ' D,
;@.
5 d -
', D ^ - d ' + D ^ , ,
( 4.11). ?, 4.11,
d ;@
' D.
8 58 9 4.11. !6:; Ex04_12.cpp
#include "stdafx.h" |
// ^=; setlocale. |
#include <locale.h> |
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#include <iostream> |
// AQRQPQ<DK <<Q^-<D<Q^. |
#include <iomanip> |
// ^=; CH?@Ab=;RQBQ< |
using namespace std; |
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void _tmain()
{
setlocale(LC_CTYPE, "Russian_Russia.1251"); const int n = 30;
int x, y, k;
for(x=1; x<=n; x++) for(y=1; y<=n; y++)
127
for(k=1; k<=n; k++)
if((x*x + y*y) == (k*k))
cout << "x =" << setw(3) << x
<<", y = " << setw(3) << y
<<", k = " << setw(3) << k
<<endl;
//†^>C ?HkHR@; =m9QK P=H<@w@ P=H<@HRbBD. system("pause");
}
F ; @ d, ;@ -
' D, ( 4.11) -
, ( 4.12).
3 ; d ; . D-
… . 4.19.
D. 4.19. D Ex04_12
8 58 9 4.12. !6:; Ex04_12.cpp
#include "stdafx.h" |
// ^=; setlocale. |
#include <locale.h> |
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#include <iostream> |
// AQRQPQ<DK <<Q^-<D<Q^. |
#include <iomanip> |
// ^=; CH?@Ab=;RQBQ< |
using namespace std; |
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void _tmain()
{
setlocale(LC_CTYPE, "Russian_Russia.1251"); const int n = 30;
128
int x, y, k;
for(x=1; x<=n; x++) for(y=1; y<=n; y++)
if(x <= y)
for(k=1; k<=n; k++)
if((x*x + y*y) == (k*k))
cout << "x =" << setw(3) << x << ", y = " << setw(3) << y << ", k = " << setw(3) << k << endl;
// †^>C ?HkHR@; =m9QK P=H<@w@ P=H<@HRbBD. system("pause");
}
B , ; -
; ,
: ' + D ^
, – ; ' D,
, Z d . ? d ( 4.13) -
' D d . : . F .
8 58 9 4.13. !6:; Ex04_13.cpp
#include "stdafx.h" |
// ^=; setlocale. |
#include <locale.h> |
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#include <iostream> |
// AQRQPQ<DK <<Q^-<D<Q^. |
#include <iomanip> |
// ^=; CH?@Ab=;RQBQ< |
using namespace std; |
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void _tmain()
{
setlocale(LC_CTYPE, "Russian_Russia.1251"); const int n = 40;
int |
x, |
y, |
k; |
int |
x2, |
y2; |
// P<H^BHRD A>B>C>??DE x @ y. |
for(x=1; x<=n; x++)
{
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129 |
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x2 = x*x; |
// P<H^BHR A>B>C>??QK x |
for(y=1; y<=n; y++) |
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{ |
// P<H^BHR A>B>C>??QK y |
y2 = y*y; |
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if(x <= y)
for(k=1; k<=n; k++)
if((x2 + y2) == (k*k))
cout << "x =" << setw(3) << x << ", y = " << setw(3) << y << ", k = " << setw(3) << k << endl;
}
}
// †^>C ?HkHR@; =m9QK P=H<@w@ P=H<@HRbBD. system("pause");
}
130
5. L
. -
. ` d r =.
` – Z Z (double, float, int . . ).
5.1. /0; /2 ; ..912
/ ; , Z-– . ? -
, . B Z 0. / r
.
3 1. / r :
int a[3]; // C k?Q EBH?@Rf 3 J@F=H: a[0], a[1], a[2]
R@AH int
float [7]; // C k?Q EBH?@Rf 7 J@F>= R@AH float
3 2. / r :
double a[5] = {2.67, -3.345, 9.567, 5.4356, -8.0}; double b[] = {2.67, -3.345, 9.567, 5.4356, -8.0}; double b[1000] = {2.67, -3.345, 9.567, 5.4356, -8.0};
.C++ « »,
. :
Z . B @
,
, . :
,