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2
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1) C# (= + ;)
2) , , {f=d+c; r+=3;}
, , , , . :
if (a= =c) Console.WriteLine(b);
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:
if (a!= s)
|
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{Console.WriteLine(b); a+=4;}
a s, b 4.
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1) ();
2) ().
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:
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x2, <0
y=
+10, ≥0
:
double x, y;
x = double.Parse(Console.ReadLine());
if (x < 0)
y = x * x;
else
y = x + 10;
. . .
double x, y;
x = double.Parse(Console.ReadLine());
y = 0.0;
if (x < 0)
y = x * x;
if (x>=0)
y = x + 10;
(!), (&&) (| |). . ( ) . :
1. . ,
bool a=true, b=false; int w=2;
if (!b) w++;
b () . , , .. w++;// 3
2. 1 () , .
bool a=true, b=false; int w=2;
if (b && a) w++;
, . , , .
3. 1 () , .
bool a=true, b=false; int w=2;
if (b || a) w++;
, w++;
# : , 0, :
if (-5) //
if (1) //
if (5-5) //
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- break;
- continue;
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goto_;
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 |
1 0 11 12 19 b
2 0 21 22 29
3 0 31 32 39
4 0 41 42 49
a
public static void Main()
{
int a, b, c;// , ,
for (a=1; a<=4; a++)
for (b=0; b<=9; b++)
{
c=a*10+b;
if (c%5!=0) continue; // 5,
Console.Write (c.ToString()+ );
//break;
//goto_EXIT;
//return;
}
EXIT: Console.WriteLine (\n!);
}
10 15 2025 30 35 40 45
!
break;
break , 5.
10 20 30 40
!
break goto_EXIT. , 5, EXIT:
!
- .
c return goto EXIT. , 5, return. Main(), .
: , . , continue .
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switch ( )
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{
case_: ; break;
case_: ; break;
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default. , , .
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.
, . . , , {I, V, X}. , , :
|
|
|
char symbol='s';
switch (symbol)
{ case 'I': Console.WriteLine(" I well ");
case 'V': Console.WriteLine(" V well ");
case 'X': Console.WriteLine(" I well ");
default:
Console.WriteLine(" No well {0:c}", symbol); break;
}
symbol s. . () . , s. , No well s :
V :
V well
I well, .. , .. . , break.
, . break; ( break ).
char symbol='s';
switch (symbol)
{ case 'I': Console.WriteLine(" I well "); break;
case 'V': Console.WriteLine(" V well "); break;
case 'X': Console.WriteLine(" I well "); break;
default:
Console.WriteLine(" No well {0:c}", symbol); break;
}
V ( char symbol= V ';)
V well
, :
int chislo=2;
switch (chislo)
{ case 1: Console.WriteLine(" I well "); break;
case 2: Console.WriteLine(" V well "); break;
case 3: Console.WriteLine(" I well "); break;
}
V well
, . ! 12, 12.2, r .
