, /* */. , . , . , :
/* prog1.c */
main()
{
return 0;
}
, , , . ?
.c,.obj,.exe,.lib?
?
, 7.
4.
, . . , . notepad.exe, .bat. bcc32.exe, bcc.bat.
notepad.exe bcc.bat,
:
rem bcc.bat
if %1== goto error
path C:\Test\Bcc
bcc32.exe -IC:\Test\Include -LC:\Test\Lib %1.c
goto end
:error
echo ( .c)
:end
, MS DOS. , . bat batch , , . rem, , . , . %1; .
/* prog2.c */
main()
{
return 2;
}
bcc.bat prog2
%1 prog2. bcc.bat , %1 - , == - . if ,
if [ NOT ] 1 == 2
NOT : , .
1 == 2
, , , .
NOT , , .
if %1== goto error
: , , error. , , , , error , . echo, , , .
|
|
|
, error
path C:\Test\Bin
- Bin. , , . , Bin CBuilder, , .
bcc32.exe , . , %1. .; , - , %1.. goto end , error. end , .
, .
@echo off
( @ echo off):
rem bcc.bat
@echo off
if %1== goto error
path C:\Test\Bcc
bcc32.exe -IC:\Test\Include -LC:\Test\Lib %1.c
goto end
:error
echo ( .c)
:end
. bcc.bat , .
, , . errorlevel. :
"if [ NOT ] ERRORLEVEL .
ERRORLEVEL
, .
rem test.bat
@echo off
prog2.exe
if ERRORLEVEL %1 echo , %1
prog2.exe, prog2.c, 2 . , test.bat , . test/bat 0:
test. bat 0
@echo off prog2.exe.
. - if ERRORLEVEL %1 - - 0. 2 , 0, : echo : " , 2". , :
|
|
|
test.bat 1.
" , 1". test.bat 2. ERRORLEVEL %1 - : 2 , 2. echo : " , 2".
test.bat 3
: 2 , 3.
. C
rem test.bat
@echo off
prog2.exe
if NOT ERRORLEVEL %1 echo %1
:
test.bat 0
test.bat 1
test.bat 2
test.bat 3
5.
. Lib. , , , , . , Include. Include CBuilder:
C:\Test\Include
_defs.h
_nfile.h
_null.h
_stddef.h
stdio.h
h header . stdio.h (standard input/output /).
notepad.exe C:\Test\Apps prog3.c:
/*prog3.c*/
#include <stdio.h>
main
{
printf (I am a student);
return 0;
}
, . , . , , . # - , , , . , . include
#include <_>
include, .
printf (print , format , ) . .
bcc32.exe IC:\Test\Include -LC:\Test\Lib prog3.c
, Apps prog2.exe. , I am a student.
, printf , , \n:
printf (I am a student\n);
, :
printf (I am a student\n\n);
:
, #include <stdio.h> ;
? .
6.
, . , , . , , , . , , . - . , . :
|
|
|
/*prog4.c*/
#include <stdio.h>
main()
{
int x = 17, y = 18, z;
z = x*y;
printf(17 * 18 = %d\n, z);
return 0;
}
main x, y z. int (integer-) ; . x y 17, y 18. , x y z. x * y , , .
17 18 - . printf. . , , , , %, . - , , d , . , printf , . , printf. : 17 * 18 = 306.
. , .
int x=17, y=17*18;
, * 18 , , :
int x = 17, y;
y = x * 18;
, , scanf:
/*prog5.c*/
#include <stdio.h>
main()
{
int x, y, z;
z = x * y;
scanf (%d %d, &x, &y);
printf (%d * %d = %d\n, x, y, z);
return 0;
}
, , . 17 18 Enter (). 17 * 18 = 306. , , 44 55, 44 * 55 = 2420. x y, . scanf . printf scanf . & () , .. . ( , ), , . :
int x = 17, y = 18, z;
z = x * y;
printf (%d\n, x);
17, y 18. * . z 306, printf. scanf , , , , & scanf .
|
|
|
scanf , , scanf , .
/*prog6.c*/
#include <stdio.h>
main()
{
int x, y;
scanf ( = %d = %d, &x, &y);
printf (%d * %d = %d\n, x, y, x * y);
return 0;
}
:
=17 =18
, =, , = , 17 18. , , = , .
int , . . unsigned int . , #define:
#define UINT unsigned int
UINT define unsigned int. define .
:
+ ,
- ,
* ,
/ ( )
% .
, % printf, scanf , . . - , . () . , : , , .. .
%u, , . , , %d.
, , , , , , : , .
:
, , , ;
;
? ?
, , , . ? ?
? . ?
#define?
, , .
7.
float double. float . , , , a * bp, a , 0.5 < a <=1. b 2 ( ) 10 ( ), p , . double . , , . %f:
float x = 2.1, y = 3.8, z;
z = (x + y) / 2;
printf ( %f %f %f, x, y, z);
#unclude<math.h>
( math.h) main, :
|
|
|
double sin (double x) - ;
double cos (double x) - ;
double tan (double x) - ;
double asin (double x) - ;
double acos (double x) - ;
double atan (double x) - ;
double exp (double x) - ;
double log (double x) - ;
double log10 (double x) - ;
double sqrt (double x) - ;
double fabs (double x) - ;
(7.1) , , .
(7.2) , .
(7.3) , .
(7.4) , .
(7.5) , .
(7.6) , .
(7.7) , .
8.
. :
if ()
1
[ else
2 ]
. , 1, , else 2. , .
, , .
/*prog7.c*/
//
#include <stdio.h>
main()
{
float x, y;
scanf ( = %f, &x);
if (x >= 0)
y = x;
else
y = - x;
printf ( | %f | = %f\n, x, y);
return 0;
}
, , , :
if ()
{
1a
1b
...
}
[ else
{
2a
2b
...
}
]
:
> - ;
< - ;
>= - ;
<= - ;
== - ()
!= - .
==. = : (x = 1 x 1) (2 = 2 , 2 2). C = , , . , x = (y = 2) x y 2. ==, , . C 0, , , 1. , 2 == 2 (1), 2 == 1 (0).
:
&& - ();
|| - ();
! - ().
, . while:
while ()
.
, , . , .
/*prog8.c*/
// 1, 2,..., n
#include <stdio.h>
main()
{
unsigned int n, s = 0, i = 0; /* s , 1 n; n s */.
scanf (n = %u, &n);
while (i < n)
{
s = s + i * i;
i++;
}
printf ( 1 * 1 + 2 * 2 +...+ %u * %u = %u\n, n, n, s);
return 0;
}
for:
/*prog9.c*/
// 1, 2,..., n
#include <stdio.h>
main()
{
unsigned int n, s, i; /* s , 1 n; n s */.
scanf (n = %u, &n);
for (i = 1, s = 0; i <= n; i++)
s = s + i * i;
printf ( 1 * 1 + 2 * 2 +...+ %u * %u = %u\n, n, n, s);
return 0;
}
, , ; , for i 1, s - 0. i 1, s i. , i 1.
/*prog10.c*/
// , . , 0.
#include <stdio.h>
main()
{
unsigned int i, s = 0; /* s , , ; i , ; i s */.
scanf (%u, &i);
while (i!= 0)
{
s = s + i;
scanf (%u, &i);
}
printf ( %u\n, s);
return 0;
}
:
(8.1) , , ;
(8.2) , , ;
(8.3) , , ;
(8.4) , , ;
(8.5) , , ;
(8.6) , , ;
(8.7) , , ;
(8.8) n, 1, 2,..., n ( n! - n );
(8.9) , ; , ;
(8.10) , , ; , ;
(8.11) , , ; , ;
9.
char (character - ). ASCII-, , ( ). %.
