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Difference between Int64 and UInt64 in C#
C# Int64 and UInt64 Differences: Here, we are going to learn about the differences between C# Int64 and C# UInt64 data types.
Submitted by IncludeHelp, on February 11, 2019
C# Int64 and C# UInt64
In C#, Int64 known as a signed integer of 8 bytes which can store both types of values including negative and positive between the ranges of -9223372036854775808 to +9223372036854775807.
UInt64 known as an unsigned integer of 8 bytes which can store only positive values between the ranges of 0 to 18446744073709551615.
Differences between 'Int64' and 'UInt64'
Int64 |
UInt64 |
Int64 stands for signed integer. |
UInt64 stands for unsigned integer. |
It's capacity to store the value is -9223372036854775808 to +9223372036854775807. |
It's capacity to store the value is 0 to 18446744073709551615. |
It can store negative and positive integers. |
It can store only positive integers. |
It occupies 8-bytes space in the memory. |
It also occupies 8-bytes space in the memory. |
Declaration syntax: Int64 variable; |
Declaration syntax: UInt64 variable; |
Example:
In this example, to explain the differences between Int64 and UInt64 in C#, we are printing their minimum and maximum values, we are also declaring two arrays – arr1 is a signed integer type and arr2 is an unsigned integer type. Initializing the arrays with corresponding negative and positive values based on their capacity.
using System;
using System.Text;
namespace Test
{
class Program
{
static void Main(string[] args)
{
//Int64 value range
Console.WriteLine("Int64 value capacity...");
Console.WriteLine("Min: {0}, Max: {1}\n", Int64.MinValue, Int64.MaxValue);
//UInt64 value range
Console.WriteLine("UInt64 value capacity...");
Console.WriteLine("Min: {0}, Max: {1}\n", UInt64.MinValue, UInt64.MaxValue);
//Int64 array
Int64[] arr1 = {
-9223372036854775808,
0,
1287822320009,
9223372036854700000,
9223372036854775807
};
Console.WriteLine("UInt64 array elements...");
foreach (Int64 num in arr1)
{
Console.WriteLine(num);
}
Console.WriteLine();
//UInt64 array
UInt64[] arr2 = {
0,
1239289300,
2399900900022,
18446744073709000000,
1844674407370955161
};
Console.WriteLine("UInt64 array elements...");
foreach (UInt64 num in arr2)
{
Console.WriteLine(num);
}
//hit ENTER to exit
Console.ReadLine();
}
}
}
Output
Int64 value capacity...
Min: -9223372036854775808, Max: 9223372036854775807
UInt64 value capacity...
Min: 0, Max: 18446744073709551615
UInt64 array elements...
-9223372036854775808
0
1287822320009
9223372036854700000
9223372036854775807
UInt64 array elements...
0
1239289300
2399900900022
18446744073709000000
1844674407370955161