The difference between signed and unsigned isn't the minus symbol, it's how the numbers are interpreted by the processor.
An unsigned signed 8-bit number:
A signed 8-bit number:
This allows easy subtraction as well as addition through two's-complement arithmetic -- add the opposite plus one to subract.
How can I store and/or print() a number that is larger than 4 294 967 295 in C? is int64_t or u_int64_t what I need ? if, so how can I printf it to stdout? (2 Replies)
hi,
Please help me with the following code to get the difference in values.
struct a{
int b1;
int c1;
char d1;
}
main()
{
unsigned int b=10;
unsigned int c;
c = b - (unsigned int )sizeof(a);
printf("%d",c);
}
Here c returns some junk value. How can i get the... (2 Replies)
... and there was absolutely nothing installed except fedora and ssh. I used yum to install vsftp and httpd, both start and ps shows they're running, and yet I can't connect with either of them. Where on earth or in redhat do I begin looking to unravel this one? I've overseen a server before but... (3 Replies)
Hello everey one,
here i am attempting to compile a c++ project .it's throughing the following errors.
my machine details are as follows:
Linux chmclozr0119 2.6.18-53.el5 #1 SMP Wed Oct 10 16:34:19 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux
errors:
=====
Generating... (0 Replies)
Hi All,
I have written the below to add the numbers in a column. Postive numbers are unsigned and negative numbers are signed in the file. After the below cmd I am getting -0.00 , instead of 0.00. Can someone guide me on what I am missing in the cmd.
grep '^L' $FileName| awk -F"|" ' {... (7 Replies)
Hey folks,
not sure whether this or the security board is the right forum. If I failed, please move :)
So here's the problem:
I need to build a Linux environment in which only "signed" processes are allowed to run. When I say signed I don't mean a VeriSign signature like you know it from... (5 Replies)
My question is simple: When should I use a long, int, char, unsigned/signed variables??
When I declare a variable "unsigned;" what did I do it???
Why would I delcare an integer "long" or "short" ( unsigned or signed)??
Any examples of when things like "unsigned", "long", "short" etc...... (6 Replies)
Hi,
I am unable to assign value zero to my variable which is defined as unsigned char.
typedef struct ABCD
{
unsigned char abc;
unsigned char def;
unsigned char ghi;
} ABCD;
typedef ABCD *PABCD;
In my Por*C code, i assign the values using memcpy like below
... (3 Replies)
Hi guys...
Macbook Pro, 13", circa August 2012, OSX 10.7.5, default bash terminal.
I require the capability to convert +32767 to -32768 into signed hex words...
The example piece code below works perfectly except...
#/bin/bash
# sign.sh
# Unsign to sign...
while true
do
# I have used... (2 Replies)