# i nclude<stdio.h> q:@$$}FjL
# i nclude<stdio.h> c*$&MCh
# i nclude<math.h> j#r|t+{"C
#define PI 3.1415926 V|xKvH
void ydgl(); :$j6
float d,am,ro,e,h,p,dt0,d0,s,ds,r,al; /PF X1hSu
int f; U`sybtuBP'
main() bS_fWD-
{ printf("Determaination the prime circle of cam\n"); o,(MB[|hQ
printf("----------------------------\n"); =7pLU+ u
printf( "input ro=");scanf("%f",&ro); vQ"EI1=7Z
printf("input h=");scanf("%f",&h); H5uWI
printf("input e=");scanf("%f",&e); n Bv|5$w:
printf("input dt0=");scanf("%f",&dt0); z( L\I
am=0;p=PI/180;
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printf("The initial data:ro=%f\n",ro); 9{_D"h}}
printf("h=%f e=%f dt0=%f\n",h,e,dt0); 1wSJ w
do Rf2$k/lZ
{ro=ro+5; Q`}1 B
for(f=0;f<=dt0;f=f+2) v8p-<N)
{d=PI*f/dt0; 6[>UF!.=
ydgl(); _!6~o>
} VXlTA>a }
} e8O[xM
while(am>30*p); vk:@rOpl
printf("The intermediate results: am=%f\n",am/p); ~Q%C>
printf("ro=%f\n",ro); 'aMT^w4if)
do o\u31,
{ro=ro-1; q@1!v
if(ro<e) 'eg?W_zu
break; J&4LyIpQ
v+ dt1;
for(f=0;f<=dt0;f=f+2) bv,_7UOG
{d=PI*f/dt0; ]^:l?F\h
ydgl(); 8" l9W=
} tgEXX- {
} i3g;B?54
while((am>30*p)||(am<=29.5*p)); ku q3QW<
printf("The final results:max alfa=%f\n",am/p); u! `oKe;
printf(" min ro=%f\n",ro); <Okk;rj2
getch(); +~mBo+ ,
} `r;e\Cp
void ydgl() xB"o
7,
{ d0=dt0*p; 'zV/4iE=
s=0.5*h*(1-cos(d)); 0Pw?@uV
ds=0.5*h*PI*sin(d)/d0; uV?[eiezD0
r=sqrt(ro*ro-e*e); z17
if((s+r)==0) fOtin[|}6@
return; @*jd.a`
al=atan((ds-e)/(s+r)); 6?OH"!b2-}
if(al>am) 4Sv&iQ=vh
am=al; oW3{&vfz
}