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ch-05-ex-05-solution.cpp
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Sat, Aug 24, 02:21
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text/x-c
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Mon, Aug 26, 02:21 (2 d)
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blob
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R9360 PCSC_git
ch-05-ex-05-solution.cpp
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/*
* chapter-05-exercise-05.cpp
*
* Matrix multiply of A(n x m) and B (p x q)
* - matrices are each read from a text file passed as a command line parameter
* - the file has the following format:
* - first line n_rows n_cols
* - following lines are the elements of the matrix
* example:
* 4 3
* 1 2 3
* 4 5 6
* 7 8 9
* 10 11 12
*
* - run the exercise as: ./ch-05-ex-05-solutions A.dat B.dat
*
* Created on: Oct 8, 2012
* Author: Radu Popescu <radu.popescu@epfl.ch>
*/
#include <cassert>
#include <fstream>
#include <iostream>
#include "ArrayUtil.hpp"
int
main
(
int
argc
,
char
*
argv
[])
{
if
(
argc
!=
3
)
{
std
::
cout
<<
"Missing arguments. Please run the exercise as:
\n
"
<<
" ./ch-05-ex-05-solutions A.dat B.dat"
<<
std
::
endl
;
return
-
1
;
}
const
char
*
file_name_A
=
argv
[
1
];
const
char
*
file_name_B
=
argv
[
2
];
double
**
A
;
double
**
B
;
int
m
,
n
,
p
,
q
;
Read
(
file_name_A
,
A
,
m
,
n
);
Read
(
file_name_B
,
B
,
p
,
q
);
double
**
C
;
Allocate
(
C
,
m
,
q
);
Multiply
(
A
,
B
,
m
,
n
,
p
,
q
,
C
);
std
::
cout
<<
"Matrix A: "
<<
std
::
endl
;
Print
(
A
,
m
,
n
,
std
::
cout
);
std
::
cout
<<
"Matrix B: "
<<
std
::
endl
;
Print
(
B
,
p
,
q
,
std
::
cout
);
std
::
cout
<<
"Matrix C = A * B: "
<<
std
::
endl
;
Print
(
C
,
m
,
q
,
std
::
cout
);
Delete
(
A
,
m
);
Delete
(
B
,
n
);
Delete
(
C
,
m
);
return
0
;
}
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