unsigned long long int specified in the C99 standard
unsigned long long long int is at least 64-bit in size and was specified in the C99 standard. It is the same as long long but unsigned.
Questions tagged [unsigned-long-long-int]
162 questions
0
votes
2 answers
where should I use ULL in after variables?
I was trying to solve a question on codeforces . I have to give input
1000000000 1000000000 1
to this code
#include
using namespace std;
int main()
{
long n,m,a;
cin >> n >> m >>a ;
long b,c;
b = (n%a==0)?(n/a):((n/a)+1);
c =…
Anmol
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- 1
0
votes
0 answers
C get percentage of ULLONG_MAX reliably
In C, the following gives me an implicit conversion warning. I know why this warning happens. What I want to know is if there's a reliable one liner way of getting the percentage of really large unsigned numbers. I know that the end result will fit…
João Pires
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0
votes
1 answer
How to serialize unsigned int / long values in AVRO
I am trying to serialize data with unsigned values to AVRO, but I see only signed int, long, float and double are supported by the AVRO libraries.
I could not find any native support for unsigned values in AVRO libraries.
Can you please help me in…
No8
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0
votes
4 answers
How to convert unsigned char* to unsigned long long int?
Does anyone know of a library that provides a function that performs this logic or perhaps a method to perform this logic?
I'm trying to convert:
unsigned char test[] = "\x00\x00\x56\x4b\x7c\x8a\xc5\xde";
to:
94882212005342 /…
mehmed_ali343
- 9
- 4
0
votes
1 answer
C++ wrong result in multiplication of two unsigned long long integers
Consider the multiplication of the following unsigned long long integers:
unsigned long long a=4294967297;
unsigned long long b=4294967297;
cout<
Kagaratsch
- 963
- 8
- 18
0
votes
1 answer
X86 architecture - Set Vector size with unsigned long long
When I am trying to set vector size with unsigned long long in x86 architecture, I am seeing below error:
unsigned long long sz;
vec.resize(sz);
error C4244: 'argument': conversion from 'unsigned __int64' to 'const
unsigned int', possible loss of…
Mounika
- 371
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0
votes
1 answer
What is the equivalent of BinaryWriter.Write() from C# in Python?
So I have this function in a C# program:
public void Write(BinaryWriter writer)
{
writer.Write(0x6369676F6C6572uL | ((ulong)Type << 56));
writer.Write(Revision);
writer.Write((ulong)(int)((uint)IsFavorite.ToInt() & 1u));
…
user8453965
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- 4
0
votes
1 answer
Why does C interpret unsigned short int as unsigned long?
In this main function, I get an error message that I should not use %hu (format specifier for unsigned short), and that the type of unsigned short appears to be unsigned long. How could that be the case?
#include
int main (void) {
…
0
votes
0 answers
Is there any difference between size_t and unsigned long long?
I am a bit confused about the difference between size_t and unsigned long long. Is there any difference between them at all?
Also when printing or scanning a size_t object for input/output, will it be appropriate to use %llu (unsigned long long's…
Dipanjan Ghosal
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- 3
0
votes
1 answer
What is the best way to ensure a user only enters natural numbers?
Just started learning C, and it would be great if you could help me with the following:
I just wrote a program that calculates the factorial of a natural number entered by the user. If the number is negative or a character, it should notify the user…
Henry
- 697
- 1
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- 16
0
votes
0 answers
How to store/assign value to a data type greater than it's range
I wrote a simple code to print the simple series where the current number multiply with the previous number.
#include
using namespace std;
int main()
{
int n, i;
unsigned long long result = 1;
std::cout << "please enter…
Sandeep Chaurasiya
- 119
- 5
0
votes
0 answers
Managing unsigned long long via hashtable
I'm looking for a solution on how to manage (accumulate, search, sort) hundreds of thousands of unsigned long long. Basically, I need to collect a number of hits for each hash represented as unsigned long long, then sort the list and get the top…
Greg
- 137
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0
votes
0 answers
Use of long long int in 2D Array
What is the meaning of "Grid[i][1] = 1LL" in the following code?
typedef long long int ll;
ll Grid[10][10];
for(i=1;i<4;i++)
{
if(Grid[i][1] == 0)
{
Grid[i][1] = 1LL;
}
else
break;
}
0
votes
1 answer
(C) i'm seemingly overflowing despite values being an order of magnitude below the size of the variable
so i'm writing code for a project in an introductory class to C (converting decimals to binary) and have decided to store the binary as a decimal rather than use an array of digits. the program runs fine for numbers up to 1023, and the gives me a…
Aerbon
- 13
- 2
0
votes
1 answer
Multiplying very large hex numbers and printing them in C
I want to multiply 2 very big hex numbers and print them out like for example:
28B2D48D74212E4F x 6734B42C025D5CF7 = 1068547cd3052bbe5688de35695b1239
Since I expected it to be a very big number I used unsigned long long int type:
unsigned long…
cheshire
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