I am doing a C++ self-study and I got stuck with this problem.
I want to have a code that asks the suer to enter two numbers and then it lists the numbers between these two numbers. It has also to print a message if these two numbers are equal.
Here is what I wrote:
I have also tried many alterations using while and for statements. My question is: Why it does stuck at the first if statement, and then quits?
Now that I have getch() to work, I have yet another problem. BTW, thank you for answering these questions, I do ask a lot, only because I am eager to know, what is a board used for anyways :)
Ok, he's the problem...
#include iostream.h
#include conio.h
int main()
{
char movement;
... (2 Replies)
Hello
if I like to move file from defined directories system to new directory that not contained any directories system structure .
But I like to create the same file system structure as source directory for example :
I have 2 directories: foo1 and foo2
foo1 have directories and foo2 have... (2 Replies)
hallo, ik heb hier een vraagje. hoeveel gebruikers kunnen er op 1 unix systeem. hopelijk antwoorden golle nu want ik moet da vinde voor school en die leerkracht zaagt. :p
groetjes eu wacht wa was mijne nick ah ja vraagje
groetjes vraagje
ik kan geen engels dus antwoord liever in het... (1 Reply)
Hey my friend was asking me if i knew a way to cout how many different words in a file. I told him no not off hand, but i was thinking about it, and i started to wonder also. I imagine this is probably pretty simple im just missing something, I keep confusing my self with how you would compair and... (16 Replies)
Hi,
Can anyone please explain a little about df command. I have following question:
Following example is showing % used as 4 where as total free blocks are 15.46 out of 16.00 MB blocks.
df -m /test
Filesystem MBblocks Free %Used Iused %Iused ... (5 Replies)
Discussion started by: itsabhi9
5 Replies
LEARN ABOUT DEBIAN
ddisna
ddisna.f(3) LAPACK ddisna.f(3)NAME
ddisna.f -
SYNOPSIS
Functions/Subroutines
subroutine ddisna (JOB, M, N, D, SEP, INFO)
DDISNA
Function/Subroutine Documentation
subroutine ddisna (characterJOB, integerM, integerN, double precision, dimension( * )D, double precision, dimension( * )SEP, integerINFO)
DDISNA
Purpose:
DDISNA computes the reciprocal condition numbers for the eigenvectors
of a real symmetric or complex Hermitian matrix or for the left or
right singular vectors of a general m-by-n matrix. The reciprocal
condition number is the 'gap' between the corresponding eigenvalue or
singular value and the nearest other one.
The bound on the error, measured by angle in radians, in the I-th
computed vector is given by
DLAMCH( 'E' ) * ( ANORM / SEP( I ) )
where ANORM = 2-norm(A) = max( abs( D(j) ) ). SEP(I) is not allowed
to be smaller than DLAMCH( 'E' )*ANORM in order to limit the size of
the error bound.
DDISNA may also be used to compute error bounds for eigenvectors of
the generalized symmetric definite eigenproblem.
Parameters:
JOB
JOB is CHARACTER*1
Specifies for which problem the reciprocal condition numbers
should be computed:
= 'E': the eigenvectors of a symmetric/Hermitian matrix;
= 'L': the left singular vectors of a general matrix;
= 'R': the right singular vectors of a general matrix.
M
M is INTEGER
The number of rows of the matrix. M >= 0.
N
N is INTEGER
If JOB = 'L' or 'R', the number of columns of the matrix,
in which case N >= 0. Ignored if JOB = 'E'.
D
D is DOUBLE PRECISION array, dimension (M) if JOB = 'E'
dimension (min(M,N)) if JOB = 'L' or 'R'
The eigenvalues (if JOB = 'E') or singular values (if JOB =
'L' or 'R') of the matrix, in either increasing or decreasing
order. If singular values, they must be non-negative.
SEP
SEP is DOUBLE PRECISION array, dimension (M) if JOB = 'E'
dimension (min(M,N)) if JOB = 'L' or 'R'
The reciprocal condition numbers of the vectors.
INFO
INFO is INTEGER
= 0: successful exit.
< 0: if INFO = -i, the i-th argument had an illegal value.
Author:
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
November 2011
Definition at line 118 of file ddisna.f.
Author
Generated automatically by Doxygen for LAPACK from the source code.
Version 3.4.1 Sun May 26 2013 ddisna.f(3)