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| #include <stdlib.h>
#include <stdio.h>
#include <math.h>
#define N 500
void Time(int n,float*t);
void Vxod(int n,float*t,float*Uvh);
void Vixod(int n,float*t,float*Uvih);
void tablica(int n,float*t,float*Uvh,float*Uvih);
float dlitelnost(int ,float*,float*);
int pogr(int, float *, float*, float*, float );
void zapis(int n,float*t,float*Uvh,float*Uvih);
void read_file(float*t,float*Uvh,float*Uvih);
void Time(int n,float*t)
{
int i;
float dt, tn=0, tk=20.0;
dt=(tk-tn)/(n-1);
for(i=0;i<n;i++)
{
t[i]=tn+i*dt;
}
return;
}
void Vxod(int n,float*t,float*Uvh)
{
int i;
float tm=10, tn=0, tk=20.0,U=75;
for(i=0;i<n;i++)
{
if (t[i]<tm) Uvh[i]=(U/(tm-tn))*(t[i]-tn); else
if (t[i]>=tm) Uvh[i]=(U/(tk-tm))*(tk-t[i]);
}
return;
}
void Vixod(int n,float*Uvh,float*Uvih)
{
int i;
float Uvh1=20.0,a=0.1,U2=40.0;
for(i=0;i<n;i++)
{
if (Uvh[i]>=0 && Uvh[i]<Uvh1) Uvih[i]=a*Uvh[i]*Uvh[i]; else Uvih[i]=U2;
}
return;
}
float dlitelnost(int n, float*t, float*Uvih)
{
int i;
float Uvih_max,U1,U2,T1,T2,T;
Uvih_max=Uvih[0];
for(i=1;i<n;i++)
{
if(Uvih[i]>Uvih_max) Uvih_max=Uvih[i];
}
U1=0.1*Uvih_max;
U2=0.9*Uvih_max;
printf("\n U1=%6.3f U2=%6.3f",U1,U2);
for(i=n-1;i>=0;i--)
if(Uvih[i]>=U1)
{
T1=t[i];
break;
}
for(i=n-1;i>=0;i--)
if(Uvih[i]>=U2)
{
T2=t[i];
break;
}
printf("\n T1=%6.3f T2=%6.3f",T1,T2);
T=T1-T2;
return T;
}
int pogr(int n, float *t, float*Uvh, float*Uvih, float W)
{
float Epx=0.012, P,B;
Time(n,t);
Vxod(n,t,Uvh);
Vixod(n,Uvh,Uvih);
P=fabs(W-dlitelnost(n,t,Uvih));
printf("\t T=%.4f P=%.3f n=%d",dlitelnost(n,t,Uvih),P,n);
if(P<Epx)
return n;
else {
W=dlitelnost(n,t,Uvih);
n=n*2;
B=pogr(n,t,Uvh,Uvih,W);
}
}
void tablica(int n,float*t,float*Uvh,float*Uvih)
{int i;
printf("\n i t[i] Uvh[i] Uvih[i]");
for(i=0;i<n;i++)
{
printf("\n %3d %.3f %.3f %.3f", i, t[i], Uvh[i],Uvih[i]);
}
}
void zapis(int n,float*t,float*Uvh,float*Uvih)
{
int i;
FILE*fp1;
FILE*fp2;
FILE*fp3;
fp1=fopen("/Users/Student/ms11/jenya/massiv_Time.txt","w");
fp2=fopen("/Users/Student/ms11/jenya/massivVxod.txt","w");
fp3=fopen("/Users/Student/ms11/jenya/massivVixod.txt","w");
for(i=0;i<n;i++)
{
fprintf(fp1,"\n %.3f \n",t[i]);
fprintf(fp2,"\n %.3f \n",Uvh[i]);
fprintf(fp3,"\n %.3f \n",Uvih[i]);
}
fclose(fp1);
fclose(fp2);
fclose(fp3);
printf("\n Faili uspeschno zapisani");
return ;
}
void read_file(float*t,float*Uvh,float*Uvih)
{
FILE
*f=fopen("jenya.txt","r");
char ch;
while(!feof(f))
{
fscanf(f,"%c",&ch);
printf("%c",ch);
}
fclose(f);
}
int main()
{
int c,i,n=11;
float t[N],Uvih[N],Uvh[N], W=1000000;
printf("\n vvedite cifru: 1-parametri, 2-dlit, 3-pogr, 4-zapis,5-read");
scanf("%d",&c);
switch(c)
{
case 1:
{
Time(n,t);
Vxod(n,t,Uvh);
Vixod(n,Uvh,Uvih);
tablica(n,t,Uvh,Uvih);
}
break;
case 2:
{
Time(n,t);
Vxod(n,t,Uvh);
Vixod(n,Uvh,Uvih);
printf("\n T=%6.3f",dlitelnost(n,t,Uvih));
}
break;
case 3:
{
printf("\nn=%d",pogr(n,t,Uvh,Uvih,W));
}
break;
case 4:
{
n=11;
zapis(n,t,Uvh,Uvih);
Time(n,t);
Vxod(n,t,Uvh);
Vixod(n,Uvh,Uvih);
}
break;
case 5:
{
read_file(t,Uvh,Uvih);
}
}
return(0);
} |
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