1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
| #define _WIN32_WINNT 0x0501
#include <iostream>
#include <cstdio>
#include <cmath>
#include <string>
#include <cstring>
#include <windows.h>
#include <conio.h>
using namespace std;
BOOL Line(HDC hdc, int x1, int y1, int x2, int y2){
//HDC hDc = GetDC(hWnd);
MoveToEx(hdc, x1, y1, NULL);
return LineTo(hdc, x2, y2);
}
BOOL Setka(HDC hDc, float ymax, float ymin, float a, float b){
int i;
Line(hDc, 350, 0, 350, 250);
Line(hDc, 350, 250, 600, 250);
Line(hDc, 350, 0, 355, 5);
Line(hDc, 350, 0, 345, 5);
Line(hDc, 600, 250, 595, 255);
Line(hDc, 600, 250, 595, 245);
for (i=0; i<=10; i++){
Line(hDc, 350, 250-i*24, 345, 250-i*24);
Line(hDc, 350+i*24, 250, 350+i*24, 255);
}
printf("\t\t\t\t%f\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\t\t\t\t%f\n\n\t\t\t\t\t%f\t\t\t%f", ymax, ymin, a, b);
return 0;
}
float diapazon(float &a, float &b, float &step){
/*float a, b, step;*/
printf("Введите диапазон, на котором необходимо рассчитать значения функции и шаг.\n");
printf("a=");
scanf("%f", &a);
printf("\nb=");;
scanf("%f", &b);
printf("\nшаг=");
scanf("%f", &step);
return a, b, step;
}
float func1(float x){
return 2/tan(3*x)-(1/(12*pow(x,2)+7*x-5));
}
float func2(float x){
return abs(pow(x,2)-pow(x,3))-7/(pow(x,3)-15*x);
}
float func3(float x){
return -x*log10f(x)*(cos(3*x)-x/3);
}
void f1(){
HWND hWnd = GetConsoleWindow();
HDC hDc = GetDC(hWnd);
COLORREF color = RGB(0,0,0);
HPEN pen = CreatePen(PS_SOLID,1,color);
SelectObject(hDc,pen);
float a, b, step, x, x1, ymin, ymax, zero, lx1, lx2;
int i;
diapazon(a, b, step);
system("cls");
printf("y(x)=2ctg(3x)-1/(12x^2+7x-5)\n");
printf("x y\n");
for (x=a; x<b; x+=step){
printf("%f %f\n", x, func1(x));
}
printf("%f %f\n", b, func1(b));
for(x=a; x<=b; x+=(b-a)/240){
if(func1(x)<10 && func1(x)>-10){
ymin=func1(x);
ymax=func1(x);
x=b+1;
}
}
for(x=a; x<=b; x+=(b-a)/240){
if(ymax<func1(x) && func1(x)<10)
ymax=func1(x);
if(ymin>func1(x) && func1(x)>-10)
ymin=func1(x);
}
printf("%f\t%f", ymin, ymax);
getch();
system("cls");
zero=(ymax-ymin)/240;
if (ymax>=0)
zero=10+ymax/zero;
else
zero=10-ymax/zero;
for (i=0; i<=240; i++){
x=a+(b-a)/240*i;
x1=x+(b-a)/240;
lx1=zero-func1(x)*abs(func1(x)/(ymax-ymin));
lx2=zero-func1(x1)*abs(func1(x1)/(ymax-ymin));
if (func1(x)*func1(x1)>=0){
if (lx1<250 && lx2<250)
Line(hDc, 350+i, zero-func1(x)*abs(func1(x))/(ymax-ymin), 351+i, zero-func1(x1)*abs(func1(x1)/(ymax-ymin)));
else
if (lx1>0 && lx2>250 && lx1<250)
Line(hDc, 350+i, zero-func1(x)*abs(func1(x))/(ymax-ymin), 351+i, 250);
}
}
Setka(hDc, ymax, ymin, a, b);
getch();
}
void f2(){
HWND hWnd = GetConsoleWindow();
HDC hDc = GetDC(hWnd);
COLORREF color = RGB(0,0,0);
HPEN pen = CreatePen(PS_SOLID,1,color);
SelectObject(hDc,pen);
float a, b, step, x, x1, ymin, ymax, zero, lx1, lx2;
int i;
diapazon(a, b, step);
system("cls");
printf("y(x)=|x^2-x^3|-7/(x^3-15x)\n");
printf("x y\n");
for (x=a; x<b; x+=step){
printf("%f %f\n", x, func2(x));
}
printf("%f %f\n", b, func2(b));
for(x=a; x<=b; x+=(b-a)/240){
if((pow(x,3)-15*x)>0.01){
ymin=func2(x);
ymax=func2(x);
x=b+1;
}
}
printf("%f %f\n", ymin, ymax);
for(x=a; x<=b; x+=(b-a)/240){
if(abs((pow(x,3)-15*x))>0.01 && ymax<func2(x))
ymax=func2(x);
if(abs((pow(x,3)-15*x))>0.01 && ymin>func2(x))
ymin=func2(x);
}
printf("%f\t%f", ymin, ymax);
zero=(ymax-ymin)/240;
if (ymax>=0)
zero=10+ymax/zero;
else
zero=10-ymax/zero;
getch();
system("cls");
for (i=0; i<=240; i++){
x=a+(b-a)/240*i;
x1=x+(b-a)/240;
lx1=zero-func1(x)*abs(func1(x)/(ymax-ymin));
lx2=zero-func1(x1)*abs(func1(x1)/(ymax-ymin));
if ((x<-sqrt(15) && x1<-sqrt(15)) || (x>-sqrt(15) && x1>-sqrt(15) && x<0 && x1<0) || (x<sqrt(15) && x1<sqrt(15) && x>0 && x1>0) || (x>sqrt(15) && x1>sqrt(15)))
Line(hDc, 350+i, zero-func2(x)*abs(func2(x)/(ymax-ymin)), 351+i, zero-func2(x1)*abs(func2(x1)/(ymax-ymin)));
else{
if ((x<-sqrt(15) && x1>-sqrt(15)) || (x<sqrt(15) && x1>sqrt(15))){
Line(hDc, 350+i, zero-func2(x)*abs(func2(x)/(ymax-ymin)), 350+i, 0);
Line(hDc, 350+i, zero-func2(x1)*abs(func2(x1)/(ymax-ymin)), 350+i, 250);
}
if (x<0 && x1>0){
Line(hDc, 350+i, zero-func2(x1)*abs(func2(x1)/(ymax-ymin)), 350+i, 250);
Line(hDc, 350+i, zero-func2(x)*abs(func2(x)/(ymax-ymin)), 350+i, 0);
}
}
}
Setka(hDc, ymax, ymin, a, b);
getch();
}
void f3(){
HWND hWnd = GetConsoleWindow();
HDC hDc = GetDC(hWnd);
COLORREF color = RGB(0,0,0);
HPEN pen = CreatePen(PS_SOLID,1,color);
SelectObject(hDc,pen);
float a, b, step, x, x1, ymin=0, ymax=0, zero;
int i;
diapazon(a, b, step);
system("cls");
printf("y(x)=-xln(x)(cos(3*x)-x/3)\n");
printf("x y\n");
for (x=a; x<b; x+=step){
printf("%f %f\n", x, func3(x));
}
printf("%f %f\n", b, func3(b));
for(x=a; x<=b; x+=(b-a)/240){
if(ymax<func3(x))
ymax=func3(x);
if(ymin>func3(x))
ymin=func3(x);
}
printf("%f\t%f", ymin, ymax);
zero=10+(240*ymax/(ymax-ymin));
getch();
system("cls");
for (i=0; i<240; i++){
x=a+(b-a)/240*i;
x1=x+(b-a)/240;
Line(hDc, 350+i, zero-func3(x)*abs(func3(x)/(ymax-ymin)), 351+i, zero-func3(x1)*abs(func3(x1)/(ymax-ymin))); \\Вот здесь что-то идёт не так
}
Setka(hDc, ymax, ymin, a, b);
getch();
}
int main (){
system ("color f0");
HWND hWnd = GetConsoleWindow();
HDC hDc = GetDC(hWnd);
COLORREF color = RGB(0,0,0);
HPEN pen = CreatePen(PS_SOLID,1,color);
SelectObject(hDc,pen);
int vblbor=0;
setlocale(LC_CTYPE, "rus");
while(vblbor!=4){
printf("Выберите функцию:\n");
printf("1 - y(x)=2ctg(3x)-1/(12x^2+7x-5)\n\n");
printf("2 - y(x)=|x^2-x^3|-7/(x^3-15x)\n\n");
printf("3 - y(x)=-xln(x)(cos(x)-x/3)\n\n");
printf("4 - Выход\n\n");
scanf("%d", &vblbor);
switch(vblbor){
case 1:
f1();
break;
case 2:
f2();
break;
case 3:
f3();
break;
}
COORD WCoord={0,0};
DWORD nKol=0;
size_t xy=80*25;
BOOL fSuccess=FillConsoleOutputAttribute(GetStdHandle(STD_OUTPUT_HANDLE), 0, xy, WCoord, &nKol);
system("cls");
}
} |
(
