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Курсовая.cpp
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| #include <stdio.h>
#include <iostream>
#include <conio.h>
#include <math.h>
#include <locale>
#define IN "C:\\Users\\st1a3sea\\Desktop\\labs\\input.txt"
float a,b,c,n1,n2;
float f1(float x)
{return a*pow(x,3)+b*x+c;}
float f2(float x)
{return a*sin(x+b)+c;}
float f3(float x)
{return a*log(fabs(x+b))+c;}
int main()
{
setlocale(LC_ALL,"Russian");
using namespace std;
float s1p=0,s2p=0,s3p=0,s1t=0,s2t=0,s3t=0,h,as1,as2,as3,os1,os2,os3;
int n,i,ans;
float p[500];
printf ("ГЉГ*ГЄГЁГ¬ îáðГ*çîì õîòèòå Г§Г*Г¤Г*ГІГј ïåðåìåГ*Г*ûå?\n 1) Г‘ ГЄГ«Г*ГўГЁГ*òóðû\n 2) Èç ГґГ*éëГ*\n");//????? ?????? ?? ?????
scanf("%d", &ans);// ?????? ?????? ? ?????????? ans
switch(ans)
{
case 1:
{
printf("Ââåäèòå a=");// ????? ?????? ?? ?????
scanf("%f", &a);// ?????? ?????? ? ?????????? a
printf("Ââåäèòå b=");// ????? ?????? ?? ?????
scanf("%f", &b);// ?????? ?????? ? ?????????? b
printf("Ââåäèòå c=");// ????? ?????? ?? ?????
scanf("%f", &c);// ?????? ?????? ? ?????????? c
printf("Ââåäèòå ÷èñëî ГЁГ*òåðâГ*ëîâ Г°Г*çáèåГ*ГЁГї n=");// ????? ?????? ?? ?????
scanf("%d", &n);// ?????? ?????? ? ?????????? n
if((n<0)||(n>500))
{
printf("ГЌГҐГўГҐГ°Г*îå ÷èñëî ГЁГ*òåðâГ*ëîâ Г°Г*çáèåГ*ГЁГї\n");// ????? ?????? ?? ?????
//system("pause");
return 1;
}
printf("Ââåäèòå Г*ГЁГ¦Г*ГЁГ© ïðåäåë ГЁГ*òåãðèðîâГ*Г*ГЁГї n1=");// ????? ?????? ?? ?????
scanf("%f", &n1);// ?????? ?????? ? ?????????? n1
printf("Ââåäèòå âåðõГ*ГЁГ© ïðåäåë ГЁГ*òåãðèðîâГ*Г*ГЁГї n2=");// ????? ?????? ?? ?????
scanf("%f", &n2);// ?????? ?????? ? ?????????? n2
if((n1<-1000)||(n1>1000)||(n2<-1000)||(n2>1000))
{
printf("ГЌГҐГўГҐГ°Г*ûå ïðåäåëû ГЁГ*òåãðèðîâГ*Г*ГЁГї. ГЌГіГ¦Г*Г® ГўГўГҐГ±ГІГЁ ïðåäåëû ГЁГ*òåãðèðîâГ*Г*ГЁГї Гў Г§Г*Г¤Г*Г*Г*îì äèГ*ГЇГ*çîГ*ГҐ \n");// ????? ?????? ?? ?????
//system("pause");
return 1;
}
break;
}
case 2:
{
freopen(IN,"r",stdin);
scanf("%f%f%f%d%f%f", &a,&b,&c,&n,&n1,&n2);
if((n>500)||(n<0))
{printf("ГЌГҐГўГҐГ°Г*îå ÷èñëî ГЁГ*òåðâГ*ëîâ Г°Г*çáèåГ*ГЁГї\n");// ????? ?????? ?? ?????
//system("pause");
return 1;
}
if((n1<-1000)||(n1>1000)||(n2<-1000)||(n2>1000))
{
printf("ГЌГҐГўГҐГ°Г*ûå ïðåäåëû ГЁГ*òåãðèðîâГ*Г*ГЁГї. ГЌГіГ¦Г*Г® ГўГўГҐГ±ГІГЁ ïðåäåëû ГЁГ*òåãðèðîâГ*Г*ГЁГї Гў Г§Г*Г¤Г*Г*îì äèГ*ГЇГ*çîГ*ГҐ\n");// ????? ?????? ?? ?????
//system("pause");
return 1;
}
break;
}
default:
{
printf("Íåîáõîäèìî âûáðГ*ГІГј äåéñòâèå 1 èëè äåéñòâèå 2");
//system("pause");
return 1;
}
}
printf("a=%f\n",a);
printf("b=%f\n",b);
printf("c=%f\n",c);
printf("n=%d\n",n);
printf("n1=%f\n",n1);
printf("n2=%f\n",n2);
h=(n2-n1)/n;
for (i=1; i<=n;i++)
{
p[i]=n1+i*h;
}
for (float x=p[1]; x<=p[n]; x+=h)
{s1p+=f1(x);
s2p+=f2(x);
s3p+=f3(x);
}
s1p*=h;
s2p*=h;
s3p*=h;
printf("s1p=%f\n",s1p);
printf("s2p=%f\n",s2p);
printf("s3p=%f\n",s3p);
for(float x=n1; x<=n2; x+=(n2-n1))
{if(x=n1)
{
s1t-=((a*pow(x,4))/4+((b*pow(x,2))/2)+c*x);
s2t-=(-a*cos(x+b)+c*x);
s3t-=(a*log(x+b)+c*x);
}
if(x=n2)
{
s1t+=((a*pow(x,4))/4+((b*pow(x,2))/2)+c*x);
s2t+=(-a*cos(x+b)+c*x);
s3t+=(a*log(x+b)+c*x);
}
}
printf("s1t=%f\n",s1t);
printf("s2t=%f\n",s2t);
printf("s3t=%f\n",s3t);
as1=fabs(s1t-s1p);
as2=fabs(s2t-s2p);
as3=fabs(s3t-s3p);
os1=as1/fabs(s1p);
os2=as2/fabs(s2p);
os3=as3/fabs(s3p);
printf("as1=%f\n",as1);
printf("as2=%f\n",as2);
printf("as3=%f\n",as3);
printf("os1=%f\n",os1);
printf("os2=%f\n",os2);
printf("os3=%f\n",os3);
getch();
} |
|
График.сpp
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| #include <stdio.h>
#include <graphics.h>
#include <math.h>
#include <locale>
const int X0=400;
const int Y0=400;
const float xmin=-10;
const float xmax=10;
int main()
{
setlocale(LC_ALL,"Russian");
float b,xmin=-10,xmax=10,h=0.001,a,x,y,c;
int l;
printf("Âûáåðèòå ГЈГ°Г*ГґГЁГЄ\n 1) y=a*x*x*x+b*x+c\n 2) y=a*cos(x+b)+c\n 3) y=a*log(fabs(x+b))+c;\n");
scanf("%d",&l);
if(l==1)
{
printf ("Ââåäèòå Г§Г*Г*Г·ГҐГ*ГЁГҐ a=");
scanf("%f",&a);
printf ("Ââåäèòå Г§Г*Г*Г·ГҐГ*ГЁГҐ b=");
scanf("%f",&b);
printf("Ââåäèòå Г§Г*Г*Г·ГҐГ*ГЁГҐ c=");
scanf("%f", &c);
initwindow(800,800);
line (X0,0,X0,799);
line (0,Y0,799,Y0);
for (x=xmin;x<=xmax;x+=h)
{
y=a*x*x*x+b*x+c;
putpixel(x+X0,-y+Y0, 3);
}
}
else
if(l==2)
{
printf ("Ââåäèòå Г§Г*Г*Г·ГҐГ*ГЁГҐ a=");
scanf("%f",&a);
printf ("Ââåäèòå Г§Г*Г*Г·ГҐГ*ГЁГҐ b=");
scanf("%f",&b);
printf("Ââåäèòå Г§Г*Г*Г·ГҐГ*ГЁГҐ c=");
scanf("%f", &c);
initwindow(800,800);
line (X0,0,X0,799);
line (0,Y0,799,Y0);
for (x=xmin;x<=xmax;x+=h)
{
y=a*cos(x+b)+c;
putpixel(x+X0,-y+Y0, 4);
} }
else
if(l==3)
{
printf ("Ââåäèòå Г§Г*Г*Г·ГҐГ*ГЁГҐ a=");
scanf("%f",&a);
printf ("Ââåäèòå Г§Г*Г*Г·ГҐГ*ГЁГҐ b=");
scanf("%f",&b);
printf("Ââåäèòå Г§Г*Г*Г·ГҐГ*ГЁГҐ c=");
scanf("%f", &c);
initwindow(800,800);
line (X0,0,X0,799);
line (0,Y0,799,Y0);
for (x=xmin;x<=xmax;x+=h)
{
y=a*log(fabs(x+b))+c;
putpixel(x+X0,-y+Y0, 5);
} }
else
{printf("Íåîáõîäèìî âûáðГ*ГІГј ГЈГ°Г*ГґГЁГЄ 1, ГЈГ°Г*ГґГЁГЄ 2 èëè ГЈГ°Г*ГґГЁГЄ 3");}
getch();
return 1;
} |
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