-
- stdio.h conio.h, #include <stdio.h> / #include <conio.h> .
printf . , .
printf (_ [, 1] [, 2] [,]);
( ) printf, , , . , , . :
, , ,
, \n, \t, ( \),
, ( %).
, printf , . . , .
/C++ | ||
int | %d | |
float, double | %f | |
char | %c | |
char *, char [] | %s |
, printf (Hello!) Hello!. printf (%d, x) x. , ,
, i x. . , i 5, x 1.5, : 5‑ 1.500000.
(%d, %f, ..) (int, float, double ..). . i (int), x (float double).
printf -, ESC ( \). :
|
|
\n | lf (line feed) | |
\t | ht (horizontal tab) | |
\v | vt (vertical tab) | |
\a | bel (audible bell) | |
\b | bs (backspace) | () |
\ | (single quote) | |
\ | (double quote) |
scanf. .
scanf (_, &1 [, &2] [,]);
scanf printf, , scanf , . scanf & ().
scanf . (-). , Backspace. , Enter. .
getch conio.h . scanf, Enter . , . , . , .
-.
1. , * , .
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//
#pragma hdrstop
#include <stdio.h> //
#include <conio.h> // -
#pragma argsused
int main (int argc, char* argv[])
{
printf ( *\n); //
printf ( * *\n); //
printf ( * *\n); // printf
printf (* *\n); // .
printf ( * *\n); //
printf ( * *\n); // \n.
printf ( *\n); //
getch(); //
return 0; //
}
//
-
- iostream.h, #include <iostream.h> . cin cout, . ( cin) ( cout). :
|
|
cin ( >>),
cout ( <<).
cin >> ;
cout << __;
cin (.. ) . cout (.. ).
:
cout << index; // index
cin >> x; // x
cout << Enter your name; //
cin >> name; // name
-, . index, x, name (int, float, char ..), . . , . C++ , ( ) .
cout ESC‑ (`\n`, `\t`, `\b` ., . ), printf. , cout . , endl (end line) . cout << endl, , , cout << \n.
-
//
#pragma hdrstop
#include <iostream.h> // cout
#include <conio.h> // getch
#pragma argsused
int main (int argc, char* argv[])
{
cout << *\n;
cout << * *\n;
cout << * *\n;
cout << * *\n;
cout << * *\n;
cout << * *\n;
cout << *\n;
getch();
return 0;
}
//
, .
. C++ , . , c ,
/C++ | /C++ | ||
+ | f + 7 | f + 7 | |
- | p c | p c | |
* | bm | b*m | |
/ | x/y | x/y | |
% | r mod s | r% s |
C++ , . C++ : ; , , ; . :
: /C++:.
, .
, C++ . math.h, #include <math.h>. :
|
|
/++ | ||
sin(x) | ||
cos(x) | ||
tan(x) | ||
sqrt(x) | ||
pow (x, y) | ||
exp(x) | ||
log(x) | ||
fabs(x) | ||
asin(x) | ||
acos(x) | ||
atan(x) |
( ) . , -. , y 2:
float x = 2.0; float y = sqrt(x);
math.h ,
/++ | |
M_PI | |
M_E | |
M_LN2 | |
M_LN10 |
, a, b, c a, b, g.
. , . a, b, g , 180/p.
//
#pragma hdrstop
#include <iostream.h> // -
#include <conio.h> // getch()
#include <math.h> // acos(x) M_PI
#pragma argsused
int main (int argc, char* argv[])
{
float a, b, c; // a, b, c
cout << input a ; //
cin >> a; // a, ..
cout << input b ;
cin >> b;
cout << input c ;
cin >> c;
float alpha, betta, gamma; //
alpha = acos((b*b + c*c a*a)/(2*b*c)); // alpha
betta = acos((a*a + c*c b*b)/(2*a*c)); // betta
gamma = acos((a*a + b*b c*c)/(2*a*b)); // gamma
cout << \n alpha = << alpha/M_PI*180; //
cout << \n betta = << betta/M_PI*180; //
cout << \n gamma = << gamma/M_PI*180; // ( )
cout << \n << alpha + betta + gamma; // =pi?
getch(); //
return 0; //
}
//