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iax0583
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Commit
9609658c
authored
6 years ago
by
viakul
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lab6/1.c
lab6/1.c
0 → 100644
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9609658c
#include <stdio.h>
#include <math.h>
int
dotProduct
(
int
vector1
[
3
],
int
vector2
[
3
]);
double
vectorMagnitude
(
int
vector
[
3
]);
double
cosComapare
(
int
vector1
[
3
],
int
vector2
[
3
]);
int
main
()
{
int
matrix
[
4
][
3
]
=
{{
1
,
4
,
6
},
{
2
,
-
3
,
1
},
{
3
,
5
,
0
},
{
3
,
1
,
-
3
}};
int
i
;
int
m
;
double
value
;
for
(
i
=
0
;
i
<
4
;
i
++
){
m
=
i
+
1
;
while
(
m
<
4
){
value
=
acos
(
cosComapare
(
matrix
[
i
],
matrix
[
m
]));
printf
(
" the anlge in radians %lf
\n
"
,
value
);
m
++
;
}
}
return
0
;
}
double
vectorMagnitude
(
int
vector
[
3
]){
int
sumOfSquares
=
0
;
int
i
;
for
(
i
=
0
;
i
<
3
;
i
++
){
sumOfSquares
+=
vector
[
i
]
*
vector
[
i
];
}
double
magnitude
=
sqrt
(
sumOfSquares
);
return
magnitude
;
}
int
dotProduct
(
int
vector1
[
3
],
int
vector2
[
3
]){
int
dot
=
0
;
int
i
=
0
;
for
(
i
=
0
;
i
<
3
;
i
++
){
dot
+=
vector1
[
i
]
+
vector2
[
i
];
}
return
dot
;
}
double
cosComapare
(
int
vector1
[
3
],
int
vector2
[
3
]){
int
dot
=
dotProduct
(
vector1
,
vector2
);
double
mag1
=
vectorMagnitude
(
vector1
);
double
mag2
=
vectorMagnitude
(
vector2
);
double
cosine
=
dot
/
(
mag1
*
mag2
);
return
cosine
;
}
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