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/* proba _1_1. cpp

*/

#include <stdio.h> // printf()

#include <conio.h> // _getch()

// main(): { }

int main()

{

printf("Ivanov Ivan \n ");

printf("Ok \ n ");

_getch(); // :
// ,

//

return 0;

}

 

:

Ivanov Ivan

Ok

-----------------------------------------------------------------------------------------

 

// 2.

/ * proba_ 2.cpp

system() */

 

#include <stdio.h>

#include <cstdlib> //
// system()

int main()

{

printf("Ivanov Ivan \n ");

printf("Ok \ n ");

system("pause"); // system()
//

return 0;

}

 

:

Ivanov Ivan

Ok

 

-----------------------------------------------------------------------------------------

// 3.

/ * proba_ 3.cpp

*/

 

#include <stdio.h>

#include <conio.h>

 

int main(){

//
// (16, 8, 10)

int i = 0 x abcd, j = 04567, k (1);

int ix = 1,
iy = 1,
iz = 1;

short shl = 4,
shm = 4;

unsigned long ulx (12345678);

//

printf("%x %o %d \ n ", i, j, k); // i,j,k (16,8,10)

printf("%d %d %d \n ", ix, iy, iz);

printf("%d %d \n ", shl, shm);

printf("%ld \n ", ulx);

_getch();

return 0;

}

 

:

abcd 4567 1

1 1 1

4 4

12345678

 

-----------------------------------------------------------------------------------------

// 4.

/ * proba_ 4.cpp

*/

 

#include <stdio.h>

#include <conio.h>

 

int main()

{ /* */

float x = 4.7; /* float x(4.7); warning */

/* ,
(4.7 f)*/

double y = 3.141592,
z = 0.6E-02;

Float fx(3.0f);

Double dy(3.141592);

 

printf("%f %lf %lf \n ", x, y, z);

printf("%f %lf \n ", fx, dy);

 

_getch();

return 0;

}

 

:

4.700000 3.141592 0.006000

3.000000 3.141592

 

-----------------------------------------------------------------------------------------

// 5.

/ * proba_ 5.cpp

*/

 

#include <stdio.h>

#include <conio.h>

 

int main() {

//

Bool ba (true);

Bool bc (1);

bool bp = false;

bool bb = bool (-25);

 

printf("%d %d \n ", ba, bc);

printf("%d %d \n ", bp, bb);

_getch();

return 0;

}

:

1 1

0 1

 

-----------------------------------------------------------------------------------------

// 6.

 

/ * proba_ 6.cpp

*/

 

#include <stdio.h>

#include <conio.h>

 

#define PI 3,14159265359

 

int main()

{

setlocale(LC_ALL, "RUS"); //

int number = 7;

float pies = 12.75;

int cost = 7800;

printf("%d %f . \n ", number, pies);

printf(" pi %f. \n ", PI);

printf(" : (%c%d). \n ", '$', 2 * cost);

 

_getch();

return 0;

}

 

-----------------------------------------------------------------------------------------

 

// 7.

 

/ * proba_ 7.cpp

*/

 

#include <stdio.h>

#include <conio.h>

 

int main()

{

int int1 = 45,
int2 = 15;

float f = 3.621f;

 

printf("int1 =%d | int1(3) =%3d | int1(-4) =%-4d | \n ", int1,int1,int1);

printf("int2 = %X | int2(3) = %3x | int2(4) = %4o | \n ", int2,int2,int2);

printf("f = %f | f = %4.2f | f = %6.1f | \n ", f, f, f);

 

f = 3123456.621f;

printf("f = %f | f = %4.2f | f = %6.1f | \n ", f, f, f);

 

_getch();

return 0;

}

 

:

 

int1 =45 | int1(3) = 45 | int1(-4) =45 |

int2 = F | int2(3) = f | int2(4) = 17 |

f= 3.621000 | f = 3.62 | f = 3.6 |

f= 3123456. 5 00000 [10] | f = 3123456. 5 0 | f = 3123456. 5 |

 

-----------------------------------------------------------------------------------------

 

// 8.

 

/ * proba_ 8.cpp

*/

 

#include <stdio.h>

#include <conio.h>

 

int main()

{

float f = 3.621f;

double db1 = 2.23;

char ch = 'z';

char *str = "aaaabbbbbcc";

 

printf("f=%g | f=%5g | f =%e | f =%+15E | \n ", f, f, f, f);

printf("db1=%5.2lf | db1 =%e | db1 =%4.1G | \n ", db1, db1, db1);

 

db1 = 212345.23123;

printf("db1=%5.2lf | db1 =%e | db1 =%4.1G | \n ", db1, db1, db1);

printf("ch=%c | ch =%03c | ch =%-03c | \n ", ch, ch, ch);

printf("str= %014s | \n str = %-014s | \n str = %s | \n ", str, str, str);

 

_getch();

return 0;

}

:

 

f=3.621 | f=3.621 | f =3.621000e+000 | f = +3.621000E+000 |

db1= 2.23 | db1 =2.230000e+000 | db1 = 2 |

db1=212345.23 | db1 =2.123452e+005 | db1 =2E+005 |

 

ch=z | ch =00z | ch =z |

str= 000aaaabbbbbcc |

str = aaaabbbbbcc |

str = aaaabbbbbcc |

 

-----------------------------------------------------------------------------------------

 

// 9.

printf() * ( , , , ). :


// float number = -12.3;int w = 10, // p = 4; // printf("%0 *. * f\n", w, p, number); // w = 15;p = 5; printf("%0 *. * f\n", w, p, number);


:

-0012.3000
-00000012.30000

!!! , .

-----------------------------------------------------------------------------------------

 

// 10.

y :

/ * proba_ 10.cpp

/ */

 

#include <stdio.h>

#include <conio.h>

 

int main()

{

Double x, y;

printf("x -?: \n ");

scanf_s("%lf", &x);

if (x < -2) y = 0;

else if (x >= -2 && x < 1) y = x;

else y = -x + 2;

printf("x = %lf, y = %lf \n ", x, y);

 

_getch();

return 0;

}

!!! : if()..... else if ().....

:

 

x?:

11.22

x = 11.220000, y = -9.220000

 

-----------------------------------------------------------------------------------------

 

// 11.

 

/ * proba_ 11.cpp

/ */

 

#include <stdio.h>

#include <conio.h>

 

int main()

{

Unsigned short x;

Bool b;

 

printf("x=? ");

scanf("%hu", &x);

 

b = bool(x);

printf("b = %d \n ", b);

// == 0, bool(x) false 0,

// != 0, bool(x) true 1,

_getch();

return 0;

}

:

x=? 2

b = 1

-----------------------------------------------------------------------------------------

++ [11]

 

// 12.

/* proba _12. cpp

++ std */

# include < iostream > // / ++

# include < conio. h > // _ getch ()

Int main()

{

std::cout << "Ivanov Ivan\n";

std::cout << "Ok" << std::endl;

_getch();

Return 0;

}

:

Ivanov Ivan

Ok

-----------------------------------------------------------------------------------------

// 13.

/ * proba_1 3.cpp

++ std */

#include <iostream>

#include <conio.h>

using namespace std; //!!!!

Int main()

{

cout << "Ivanov Ivan\n";

cout << "Ok" << endl;

_getch();

return 0;

}

 

:

Ivanov Ivan

Ok

-----------------------------------------------------------------------------------------

 

// 14.

 

/ * proba_1 4.cpp

++ std */

 

#include <iostream>

#include <conio.h>

 

using namespace std;

 

int main()

{

cout << "Ivanov Ivan \n ";

cout << "Ok \n ";

_getch();

return 0;

}

:

Ivanov Ivan

Ok

 

 

-----------------------------------------------------------------------------------------

// 15.

<< .

 

/ * proba_1 5.cpp

++ */

 

#include <iostream>

#include <conio.h>

 

using namespace std;

 

int main()

{

char ch1 (':'),

symbol ='d';

char c1 = 58; // :

/* !!!

, */

// ???

cout << c1 << " " << ch1 << endl; //::

cout << symbol << endl; // d

 

char first = '\n'; //esc-

char ch2 = '\''; //

 

cout << ch2 << endl; // '

char ch3 = 0x3f; // ? 16- /

char c3('?');

 

cout << ch3 << " " << c3<< endl; //??

//

cout << "\x 3f \? "; //??

cout << "\x 3f \n \? \n "; //? ?

 

_getch();

return 0;

}

-----------------------------------------------------------------------------------------

// 16.

 

/ * proba_1 6.cpp

++ */

 

#include <iostream>

#include <iomanip> // setw

#include <conio.h>

 

using namespace std;

 

int main()

{

cout << 1990 << setw(8) << 135 << endl

<< 1991 << setw(8) << 7290 << endl

<< 1992 << setw(8) << 11300 << endl

<< 1993 << setw(8) << 16200 << endl;

_getch();

return 0;

}

:

1990 135

1991 7290

1992 11300

1993 16200

-----------------------------------------------------------------------------------------

// 17.

(, ) dec, hex, oct. .

 

/ * proba_1 7.cpp

++ */

 

#include <iostream>

#include <iomanip> //

#include <conio.h>

 

using namespace std;

 

int main()

{
setlocale(LC_ALL, "RUS"); //

cout << ": " << oct << 10 << ' ' << 20 << endl;
cout << ": " << hex << 10 << ' ' << 20 << endl;
cout << ": " << dec << 10 << ' ' << 20 << endl;

 

_getch();

return 0;

}

 

:

: 12 24

: 14

: 10 20

 

-----------------------------------------------------------------------------------------

(0 , 0 ) showbase, uppercase, width(w) ios.

 

// 18.

 

/ * proba_1 8.cpp

++ */

 

#include <iostream>

#include <iomanip> //

#include <conio.h>

 

using namespace std;

 

int main()

{

long a = 1000,

b = 077;

double d = 0.12,

c = 1.3e-4;

cout.width (7); // = 7

// 16- /,

cout << hex << showbase << uppercase << a;

cout.width(7); // = 7

cout << b << endl; //

cout.width(12); // = 12

cout.setf (ios:: right); // 

cout << d << endl;

cout.width(12); // = 12

cout.setf (ios:: right); //

cout << c << endl;

cout << d << endl;

cout << c << endl;

_getch();

return 0;

}

 

:

0X3E8 0X3F

0.12

0.00013

0.12

0.00013

-----------------------------------------------------------------------------------------

// 19.

 

/ * proba_1 9.cpp

++ */

 

#include <iostream>

#include <iomanip> //

#include <conio.h>

 

using namespace std;

 

int main()

{

Double x,

y;

cout << "enter a real number x:\n";

if (cin >> x) { //

y = x * x;

cout << "\nfor x=";

cout.width(9); // 9

cout << setiosflags(ios::fixed)<< setprecision(6) << x;
// . 6

cout << setw(8); // 8 " y="

cout << " y = ";

cout << setprecision(8); // 8 y

cout.width(15); // 15 y

cout << y << endl;

}

_getch();

return 0;

}

:

enter a real number x:

1.2345

for x=1.234500y=1.52399025

-----------------------------------------------------------------------------------------

++

// 20.

 

/ * proba_ 20.cpp

++ */

 

#include <iostream>

#include <conio.h>

#include <iomanip> //

 

using namespace std;

 

int main()

{

Double x, y;

cout << "vvedite x " << endl;

if (cin >> x) { // ???

if (x < -2) {y = 0;}

else if (x >= -2 && x < 1) {y = x;}

else {y = -x + 2;}

cout << setiosflags(ios::fixed) << setprecision(6);

cout << "x= " << x;

cout << " y= " << y << endl;

}

_getch();

return 0;

}

 

:

vvedite x

11.22

x= 11.220000, y= -9.220000

 

-----------------------------------------------------------------------------------------

// 21.

 

/ * proba_ 21.cpp

/ ++ */

 

#include <iostream>

#include <conio.h>

 

using namespace std;

 

int main()

{

char str1[10],

str2[20],

str3[30];

cout << " Input string:\n"; //

// ???

cin >> str1 >> str2 >> str3; // odin dwa try

cout << "str1=" << str1 << " "
<< "str2=" << str2<< " "
<< "str3=" << str3 << endl;

_getch();

return 0;

}

 

:

 

Input string:

odin dwa try

str1= odin str2=dwa str3=try

 

-----------------------------------------------------------------------------------------

// 22.

 

/ * proba_ 22.cpp

( ) */

// do while

#include <iostream>

#include <conio.h>

 

using namespace std;

int main() {

Char ch;

cout << "Input char (end - x)\n";

do {

cout << ":"; //

cin >> ch; // <enter>

cout << ch << endl;

} while (ch!= 'x');

 

cout << " <x> - end " << endl;

 

_getch();

return 0;

}

 

:

 

Input char (end - x)

:q

:w

:e

:r

:t

:a

:s

:x

<x> - end

-----------------------------------------------------------------------------------------

// while

// 23.

#include <iostream>

#include <conio.h>

 

using namespace std;

 

int main() {

char ch;

cout << "Input char (end - x)\n";

while (cout << ":", cin >> ch, ch!= 'x')

{

cout << ch << endl;

}

cout << " <x> - end " << endl;

 

_getch();

return 0;

}





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