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| char, signed char | -128127 | |
| unsigned char | 0255 | |
| int, signed int, short int, signed short int | -3276832767 | |
| unsigned int, unsigned short int | 065535 | |
| long int, signed long int | -21474836482147483647 | |
| unsigned long int | 04294967295 | |
| float | 3.4E-383.4E38 | |
| double | 1.7E-3081.7E308 | |
| long double | 3.4E-49323.4E4932 | |
| pointer | ||
| pointer |
(. ) .
int age=20, height=170; // ,
unsigned weight=height/2; //
long index; //
unsigned, short, long, int .
| + | , |
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| x= | , ={+,-,*,/,%} |
| ++ | ( 1) |
| -- | ( 1) |
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| ! | () |
| = = | |
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| > | |
| < | |
| >= | |
| <= | |
| & | (and) |
| | | (or) |
| ^ | |
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| >> | |
| << | |
| x= | , x={&,|,^,>>,<<) |
float, double, long double.
float force=12.78, /* */
acceleration=1.234; /* */
double height; /* */
, (. ). % ( ).
|
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char, signed char, unsigned char. .
char ch=$, ans=n, ascii_value=65;
char int, .
#include <stdio.h>
Main()
{
char ch=a, ans;
printf( ch+3=%c,ch+3);
ans=ch%3;
printf((\n\n ans=%d\n,ans);
}
:
ch+3=d
ans=1
char , . , , , .
:
char name[n];
name ;
n .
char str[80];
.
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x>>n 
x<<n
123=0000000001111011
123<<5 -> 0000111101100000=3936
123>>1 -> 00000000000111101=61
: =, +=, -=, *=, /=, %=, ++ --.
. , . . .
a=(b=c)*d;
b c, d a.
a=b=c=d=e=f=0;
+=, -=, *=, /= , :
a+=b; -> a=a+b; a-=b; -> a=a-b; a*=b; -> a=a*b; a/=b; -> a=a/b;
++ -- () () 1 . :
++a,++ a 1 () .
--a,-- a 1 () .
#include <stdio.h>
Main()
{
int a,b,c=3,d=4,f=3,g,h=5,z=6,i;
a=z+(b=c*d*f+(g=h+(i=3)));
printf(%d\n,a);
}
50.
sizeof
, . , . , . , .
#include <stdio.h>
Main()
{
Float a;
Int b;
Char c;
float d[500];
printf(\n %d, sizeof(int));
printf(\n %d, sizeof(double));
printf(\n a %d, sizeof a);
printf(\n d %d, sizeof d);
}
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