a = 0,96;
b = 35,
n £ 10;
m £ 15.
X(n) ;
xi i- ;
i;
i = i + 1 i.
n = 5, x1=4,5; x2=12,3; x3=-0,8; x4=17; x5=0,3
Y(m) ;
yj j- ;
j;
j = j + 1 j.
m = 4, y1=45,3; y2=-0,3; y3=12,7; y4=2,5
;
Y;
.
(X Y) (n m). , , . , , , X(n), Y(m). : , . k.
sum, :
sum(X, n), sum(Y, m).
X n, Y m.
, X(n) Y(m).
. 10.12.
. 10.12.
s i .
.
/++ .
, X(n), sum(x, n), Y(m) sum(y, m).
ü ! .
, , . . sum(&x[0], n) sum(&y[0], m).
, , .
|
|
|
.
, . , . .
, , (). .
. (), .
:
* 1 [, * 2,..., * N ];
, ;
* ;
1... N ;
, ;
[ ] ;
; .
() . ( ) .
,
float *a, *b;
int *f;
, a b, , f.
float x, y, *a, *b;
int *f, arr[10];
x, y arr. .
, ,
= &
;
& ;
.
,
float x, y, *a, *b;
b = &x;
b x.
f = &arr[0]; f = arr;
f arr ( ).
, .
(, ), .
(*) .
:
*
;
* .
ü ! , ( ). , , (/) .
,
float g, s, *t;
...
g = 15.3;
t = &g;
s = sqrt(*t) + *t + 0.5;
...
g, s t , t g, , t, s 15.3 ( g).
|
|
|
float x, z, *d;
...
d = &z;
*d = pow(x, 2) + 5;
...
( pow(x, 2) + 5) z d.
ü ! . ().
( ). ( ) . .
( ) .
,
| ... float funk(float *px, int n1); main() { float t, x[10]; ... n = 10; t = funk(x, n); ... } float funk(float *px, int n1) {... for(i=0; i <= n1; i++) f =... + px[i] +....; ... return f; } | ... float funk(float*, int); main() { float t, x[10]; ... n = 10; t = funk(x, n); ... } float funk(float *px, int n1) {... for(i=0; i <= n1; i++) f =... + *(px+i) +....; ... return f; } |
, . *.
i- :
;
.
( ), i . , .
.
, . 10.2:
10.2
| a | b | n | m | i | j | xi | yj | z1 | z2 | z | k | ti | s | |
| a | b | n | m | i | j | x[i] | y[j] | z1 | z2 | z | k | t[i] | s |
#include<stdio.h>/* -*/
#include<conio.h/* getch(), clrscr()*/
#include <math.h> /* . */
#include<windows.h> /* CharToOem*/
float sum(float *t, int k);/* */
main() /* */
{
float a, b, z1, z2, z, x[10], y[15]; /* */
int i, j, n, m; /* */
char buf[30];
clrscr();
CharToOem(" a, b, n, m: ",buf);
printf("\n %s \n",buf);
scanf("%f%f%d%d", &a, &b, &n, &m);
printf("\n a=%.2f b=%.2f n=%d m=%d\n", a, b, n, m);
for(i = 0; i < n; i++) /* x[ i ] */
{
CharToOem(" ",buf);
printf("\n %s x(%d): ",buf,i+1);
scanf("%f", &x[i]);
}
for(i = 0; i < n; i++) /* x[ i ] */
printf(" %.2f",x[i]);
printf("\n"); /* */
for(j = 0; j < m; j++) /* y[ j ] */
{
CharToOem(" ",buf);
printf("\n %s y(%d): ",buf,j+1);
scanf("%f", &y[j]);
}
for(j = 0; j < m; j++) /* y[ j ] */
|
|
|
printf(" %f",y[j]);
z1 = cos(a) + sum(x, n); /* */
z2 = sum(y, m) - b; /* */
z = z1 / z2;
printf("\n\n z1=%.2f z2=%.2f z=%.2f\n", z1, z2, z);
getch();
}
/* */
float sum(float *t, int k) /* */
{
float s; /* */
int i; /* s i */
s = 0;
for(i = 0; i < k; i++) /* */
{
s = s + t[ i ];
}
return s; /* s */
}
0.96 35. 5 4
4.5 12.3 -0.8 17 0.3
45.3 -0.3 12.7 2.5
.
10.3.
. a, b, n, m (EditA, EditB, EditN, EditM). X Y (Edit, EditY).
z1, z2, z (EditZ1, EditZ2, EditZ).
, . .
.
#include <stdio.h>/* -*/
#include <math.h>/* . */
float sum(float *t, int k);/* */
void TSumprDlgClient::BNClickedOk()
{
// INSERT>> Your code here.
float a, b, z1, z2, z, x[10], y[15]; /* */
int i, j, n, m; /* */
char buf[30];
EditA->GetText(buf,10); /* */
a=atof(buf); /* */
EditN->GetText(buf,10); /* */
n=atoi(buf); /* n*/
EditM->GetText(buf,10); /* */
m=atoi(buf); /* m*/
EditB->GetText(buf,10); /* */
b=atoi(buf); /* b*/
for(i = 0; i < n; i++) /* x[ i ] */
{
EditX->GetLine(buf, sizeof(buf),i);
x[i]=atof(buf);
}
for(j = 0; j < m; j++) /* y[ j ] */
{
EditY->GetLine(buf, sizeof(buf),j);
y[j]=atof(buf);
}
z1 = cos(a) + sum(x, n); /* */
z2 = sum(y, m) - b; /* */
z = z1 / z2;
sprintf(buf,"%.2f ",z1); /* */
EditZ1->SetText(buf); /* z1*/
sprintf(buf,"%.2f ", z2); /* */
EditZ2->SetText(buf); /* z2*/
sprintf(buf,"%.2f",z); /* */
EditZ->SetText(buf); /* z*/
}
float sum(float *t, int k) /* */
{
float s; /* */
int i; /* s i */
s = 0;
for(i = 0; i < k; i++) /* */
s = s + t[ i ];
return s; /* s */
}
0.96 35. 5 4
4.5 12.3 -0.8 17 0.3
45.3 -0.3 12.7 2.5
.
10.4.
