# i nclude<stdio.h> F& .iY0Pt
# i nclude<stdio.h> v+f:VA
# i nclude<math.h> /R^Moj<
#define PI 3.1415926 =`[08
void ydgl(); 8o#*0d|
float d,am,ro,e,h,p,dt0,d0,s,ds,r,al; sufidi
int f; e p~3e5
main() -v.\CtpHv
{ printf("Determaination the prime circle of cam\n"); w'z?1M(*
printf("----------------------------\n"); $'*@g1vY
printf( "input ro=");scanf("%f",&ro); Gf\Dc
printf("input h=");scanf("%f",&h); cP%mkh_ri
printf("input e=");scanf("%f",&e); A9\m.3jo
printf("input dt0=");scanf("%f",&dt0); vJVL%,7
am=0;p=PI/180; BM!\U 6
printf("The initial data:ro=%f\n",ro); zOD5a=[1
printf("h=%f e=%f dt0=%f\n",h,e,dt0); A|1
TE$
do S%<RV6{aiM
{ro=ro+5; w~+5FSdH
for(f=0;f<=dt0;f=f+2) _+YCwg
{d=PI*f/dt0; jm0J)Z_"nr
ydgl(); i71,
} uN20sD}
} [~9rp]<
while(am>30*p); RB.&,1
printf("The intermediate results: am=%f\n",am/p); l|z
'Lwwm5
printf("ro=%f\n",ro); SO%x=W
do 90L,.
{ro=ro-1; QEK,mc3
if(ro<e) Nq6~6Rr
break; ..6 : _{wg
QLrFAV
for(f=0;f<=dt0;f=f+2) 4of3#M
{d=PI*f/dt0; YYU Di@K
ydgl(); zM{'GB+en
} oVutHt
} ?;@xAj
while((am>30*p)||(am<=29.5*p)); X{zg-k(@
printf("The final results:max alfa=%f\n",am/p); T-ID{i
printf(" min ro=%f\n",ro); g\;AU2?p7
getch(); yzr>]"o
} sKYb&2wJ
void ydgl() y>wrm:b-O
{ d0=dt0*p; >ch{u{i6
s=0.5*h*(1-cos(d)); 7^,C=2
ds=0.5*h*PI*sin(d)/d0; ktLXL;~X
r=sqrt(ro*ro-e*e); =S/$h}Vi
if((s+r)==0) nD6mLNi%a
return; XzI c<81Z
al=atan((ds-e)/(s+r)); H|_^T.n?E
if(al>am) oR (hL4Dc
am=al; 'WK}T)o
}