c# 插入樹形數據#
This section contains aptitude questions and answers on C# data types (set 1).
本節包含有關C#數據類型(集合1)的能力問題和答案。
System.Int16
System.Int32
System.Int64
System.Byte
Correct answer: 2
System.Int32
int is an alias of System.Int32 type, it takes 32 bits in the memory.
System.Int16
System.Int32
System.Int64
系統字節
正確答案:2
System.Int32
int是System.Int32類型的別名,它在內存中占用32位。
System.Char
System.String
System.Text
Character
Correct answer: 1
System.Char
char is an alias of System.Char type, it takes 2 bytes space in the memory. Read more: char keyword in C#.
系統字符
System.String
系統文字
字符
正確答案:1
系統字符
char是System.Char類型的別名,它在內存中占用2個字節的空間。 : C#中的char關鍵字 。
-128 to +127
0 to 127
0 to 255
0 to 256
Correct answer: 3
0 to 255
byte is an alias of System.Byte type, it takes 1 byte space in the memory. Read more: byte keyword in C#.
-128至+127
0至127
0至255
0至256
正確答案:3
0至255
byte是System.Byte類型的別名,它在內存中占用1個字節的空間。 : C#中的byte關鍵字 。
-128 to +127
0 to 127
0 to 255
0 to 256
Correct answer: 1
-128 to +127
sbyte stands for signed byte, it's an alias of System.SByte, it takes 1-byte space in the memory. Read more: sbyte keyword in C#.
-128至+127
0至127
0至255
0至256
正確答案:1
-128至+127
sbyte代表有符號字節,它是System.SByte的別名,它在內存中占用1個字節的空間。 : C#中的sbyte關鍵字 。
static void Main(string[] args)
{
byte a = 10;
byte b = 20;
byte sum = a + b;
Console.WriteLine(sum);
}
30
Compilation error
Run time error
None
Correct answer: 2
Compilation error: Cannot implicitly convert type 'int' to 'byte'
By default, Arithmetic operation evaluates to 'int'.
To fix this problem, cast the expression as byte sum = (byte) (a+b);
30
編譯錯誤
運行時錯誤
沒有
正確答案:2
編譯錯誤:無法將類型'int'隱式轉換為'byte'
默認情況下,算術運算的結果為'int'。
要解決此問題,請將表達式強制轉換為byte sum =(byte)(a + b);
static void Main(string[] args)
{
sbyte a = -10;
sbyte b = 20;
sbyte sum = a + b;
Console.WriteLine(sum);
}
10
Compilation error
Run time error
None
Correct answer: 2
Compilation error: Cannot implicitly convert type 'int' to 'sbyte'
By default, Arithmetic operation evaluates to 'int'.
To fix this problem, cast the expression as sbyte sum = (sbyte) (a+b);
10
編譯錯誤
運行時錯誤
沒有
正確答案:2
編譯錯誤:無法將類型'int'隱式轉換為'sbyte'
默認情況下,算術運算的結果為'int'。
要解決此問題,請將表達式強制轉換為sbyte sum =(sbyte)(a + b);
0 to 255
-32,768 to 32,767
-2,147,483,648 to 2,147,483,647
0 to 4,294,967,295
Correct answer: 3
-2,147,483,648 to 2,147,483,647
The correct range of int is from -2,147,483,648 to 2,147,483,647
0至255
-32,768至32,767
-2,147,483,648至2,147,483,647
0至4,294,967,295
正確答案:3
-2,147,483,648至2,147,483,647
int的正確范圍是-2,147,483,648到2,147,483,647
0 to 255
-32,768 to 32,767
-2,147,483,648 to 2,147,483,647
0 to 4,294,967,295
Correct answer: 4
0 to 4,294,967,295
The correct range of uint is from 0 to 4,294,967,295
0至255
-32,768至32,767
-2,147,483,648至2,147,483,647
0至4,294,967,295
正確答案:4
0至4,294,967,295
uint的正確范圍是0到4,294,967,295
-9,223,372,036,854,775,808 to 9,223,372,036,854,775,807
0 to 18,446,744,073,709,551,615
-2,147,483,648 to 2,147,483,647
0 to 4,294,967,295
Correct answer: 1
-9,223,372,036,854,775,808 to 9,223,372,036,854,775,807
The correct range of long is from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807
-9,223,372,036,854,775,808至9,223,372,036,854,775,807
0至18,446,744,073,709,551,615
-2,147,483,648至2,147,483,647
0至4,294,967,295
正確答案:1
-9,223,372,036,854,775,808至9,223,372,036,854,775,807
正確的long范圍是-9,223,372,036,854,775,808至9,223,372,036,854,775,807
-9,223,372,036,854,775,808 to 9,223,372,036,854,775,807
0 to 18,446,744,073,709,551,615
-2,147,483,648 to 2,147,483,647
0 to 4,294,967,295
Correct answer: 2
0 to 18,446,744,073,709,551,615
The correct range of long is from 0 to 18,446,744,073,709,551,615
-9,223,372,036,854,775,808至9,223,372,036,854,775,807
0至18,446,744,073,709,551,615
-2,147,483,648至2,147,483,647
0至4,294,967,295
正確答案:2
0至18,446,744,073,709,551,615
正確的long范圍是從0到18,446,744,073,709,551,615
Anders Hejlsberg
Dennis richie
Ken Thompson
Bjarne Stroustrup
Correct answer: 1
Anders Hejlsberg
C# is developed by Anders Hejlsberg.
安德斯·海斯伯格
丹尼斯·里奇
肯·湯普森
比尼亞·斯特魯斯特魯普(Bjarne Stroustrup)
正確答案:1
安德斯·海斯伯格
C#由Anders Hejlsberg開發。
1 byte
2 bytes
4 bytes
8 bytes
Correct answer: 2
2 bytes
If we declare a variable of char type, it occupies 2 bytes space in memory.
1個字節
2字節
4字節
8字節
正確答案:2
2字節
如果我們聲明一個char類型的變量,則它將在內存中占用2個字節的空間。
System.Single
System.Double
System.Decimal
System.float
Correct answer: 1
System.Single
In C#.NET System.Single is the equivalent .NET type of float type.
單系統
系統雙
系統十進制
系統浮動
正確答案:1
單系統
在C#.NET中,Single是等效的.NET類型的float類型。
System.Single
System.Double
System.Decimal
System.float
Correct answer: 4
System.float
System.float is not available of .NET framework.
單系統
系統雙
系統十進制
系統浮動
正確答案:4
系統浮動
.NET框架不提供System.float。
System.Single
System.Double
System.Decimal
System.float
Correct answer: 2
System.Double
In C#.NET System.Double is the equivalent .NET type of double type.
單系統
系統雙
系統十進制
系統浮動
正確答案:2
系統雙
在C#.NET中,System.Double是double類型的等效.NET類型。
System.Single
System.Double
System.Decimal
System.float
Correct answer: 3
System.Decimal
In C#.NET System.Decimal is the equivalent .NET type of decimal type.
單系統
系統雙
系統十進制
系統浮動
正確答案:3
系統十進制
在C#.NET中,System.Decimal是等效的十進制類型的.NET類型。
32 bytes
16 bytes
4 bytes
8 bytes
Correct answer: 3
4 bytes
In C# the size of a float variable is 4 bytes.
32字節
16字節
4字節
8字節
正確答案:3
4字節
在C#中,浮點變量的大小為4個字節。
32 bytes
16 bytes
4 bytes
8 bytes
Correct answer: 4
8 bytes
In C# the size of a double variable is 8 bytes.
32字節
16字節
4字節
8字節
正確答案:4
8字節
在C#中,雙精度變量的大小為8個字節。
32 bytes
16 bytes
4 bytes
8 bytes
Correct answer: 2
16 bytes
In C# the size of a decimal variable is 16 bytes.
32字節
16字節
4字節
8字節
正確答案:2
16字節
在C#中,十進制變量的大小為16個字節。
Float
Double
Decimal
Single
Correct answer: 2
Double
By default, a real number is Double.
浮動
雙
小數
單
正確答案:2
雙
默認情況下,實數為Double。
'f' or 'F'
'M' or 'm'
'D' or 'd'
'K' or 'k'
Correct answer: 1
'f' or 'F'
By default, a real number is Double. To use real number for float type, we need to use 'F'/'f' in suffix of real number.
'f'或'F'
'M'或'm'
'D'或'd'
'K'或'k'
正確答案:1
'f'或'F'
默認情況下,實數為Double。 要對浮點類型使用實數,我們需要在實數后綴中使用'F'/'f'。
'f' or 'F'
'M' or 'm'
'D' or 'd'
'K' or 'k'
Correct answer: 2
'M' or 'm'
By default, a real number is Double. To use real number for decimal type, we need to use 'M'/'m' in suffix of real number.
'f'或'F'
'M'或'm'
'D'或'd'
'K'或'k'
正確答案:2
'M'或'm'
默認情況下,實數為Double。 要將實數用于十進制類型,我們需要在實數后綴中使用'M'/'m'。
Up to 15 digits
Up to 7 digits
Up to 28 digits
Up to 20 digits
Correct answer: 2
Up to 7 digits
The precision of float numbers in C# is up to 7 digits.
最多15位數字
最多7位數字
最多28位
最多20位
正確答案:2
最多7位數字
C#中浮點數的精度最高為7位數字。
Up to 15 digits
Up to 7 digits
Up to 28 digits
Up to 20 digits
Correct answer: 1
Up to 15 digits
The precision of double numbers in C# is up to 15 digits.
最多15位數字
最多7位數字
最多28位
最多20位
正確答案:1
最多15位數字
C#中雙精度數字的精度最高為15位。
Up to 15 digits
Up to 7 digits
Up to 28 digits
Up to 20 digits
Correct answer: 3
Up to 28 digits
The precision of decimal numbers in C# is up to 28 digits.
最多15位數字
最多7位數字
最多28位
最多20位
正確答案:3
最多28位
C#中十進制數字的精度最高為28位。
翻譯自: https://www.includehelp.com/dot-net/c-sharp-data-types-aptitude-questions-and-answers.aspx
c# 插入樹形數據#