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]
151 questions
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C program to find the n'th prime number-
#include
#include
#include
int prime(long long int);
long long int *arr; //array to hold n prime numbers
int main()
{
int i,count=4;;
long long int n;
scanf("%lli",&n);
arr=malloc(sizeof(long…
Devarshi
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2 answers
unsigned long int giving integer overflow
I am trying to create a program in c to solve sudoku puzzles,in which i am trying to store a number equal to 2 * 3 * 5 * 7 * 11 * 13 * 17 * 19 * 23 * 29 in an unsigned long int variable.
on compiling with boath gcc and g++ on a 32 bit Ubuntu…
Prakhar Singh
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java converting int to short
I am calculating 16 bit checksum on my data which i need to send to server where it has to recalculate and match with the provided checksum. Checksum value that i am getting is in int but i have only 2 bytes for sending the value.So i am casting int…
changed
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Datatype which can store very large value in C
Recently in programming contest in Here, the problem is pretty straight forward but catch is with worst case scenario which we have to handle data of size 10^10000 .
I tried the program in python which is straight forward as i don't have to specify…
KARTHIK BHAT
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handling overflow in Objective C
I'm building a hex calculator in objective-c. My problem is dealing with long long values that would overflow when multiplied.
When I add values before I add i check that the value would not overflow by doing something like this.
long long…
user3474378
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1 answer
Why are signed negative numbers converted to unsigned numbers?
Particularly i have a large unsigned number and a large signed negative number.
Why can't I divide a large number by a negative number C++
When I try to divide the two, I get the result zero simply because something somewhere is converting my signed…
user3315127
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C++ unsigned long and <
I have the following code:
while( int()(uStartFrame - iFrameOffset) < 1)
{
iFrameOffset--;
}
uStartFrame and iFrameOffset are both unsigned long, so the < statement is a little difficult, I think.
However, I thought that I fixed it using…
tmighty
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How to use stoull on VS2008?
Do you have any idea on how to use stoull on Visual Studio 2008? I want to convert string to unsigned long long. Thanks!
Christian Mark Ramos Godoy
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Get the network 5bytes warning left shift count >= width of type
My machine is 64 bit. My code as below:
unsigned long long periodpackcount=*(mBuffer+offset)<<32|*(mBuffer+offset+1)<<24|* (mBuffer+offset+2)<<16|*(mBuffer+offset+3)<<8|*(mBuffer+offset+4);
mBuffer is unsigned char*. I want to get 5 bytes data…
Ericzhang88120
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unsigned long long to binary
I am trying to check the set bits of an unsigned long long in c++ using below algorithm which only checks whether the bit is set or not.But my problem is the answer that I get is wrong.Please help me understand how unsigned long long is stored in…
g4ur4v
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3 answers
Unsigned long returning negative in C++
below when any of the numA-D is multiplied numerous times the number suddenly becomes a negative. For example when numA is multiplied 3 times by 256 the number then becomes negative,but not if only multiplied by 256 twice. The purpose of this…
user1739860
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3 answers
C++ Largest Numerical Storage
Is there an equivalent to Java's Bigint in C++ that can store the following…
Richard
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Division of a long long C type
I need to use the 'long long' c type, to store data in a very large array. Since my code is large, I made up this fairly simple code which has the same problem. So, it iterates 222 times in the loop, and prints out when the loop reaches 50% (of…
Anoracx
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Will a 64-bit Unsigned Integer wrap around on 32-bit system?
Simple question, need an answer quickly please!
Take this situation on a 32-bit machine:
Unsigned long long n = 1;
n -= 2;
I know on a 64-bit machine, this would wrap around to the highest unsigned long long. But what would happen on a 32-bit…
Jason Block
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Unsigned long long arithmetic into double
I'm making a function that takes in 3 unsigned long longs, and applies the law of cosines to find out if the triangle is obtuse, acute or a right triangle. Should I just cast the variables to doubles before I use them?
void triar( unsigned long…
Painguy
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