# i nclude<stdio.h> "j|}-a
# i nclude<stdio.h> V"":_`1VW
# i nclude<math.h> Z-[nHSf
#define PI 3.1415926 w6tb vhcmU
void ydgl(); QYDTb=h~
float d,am,ro,e,h,p,dt0,d0,s,ds,r,al; <<F#Al
int f; 1o)Vzv
main() <jdS0YT
{ printf("Determaination the prime circle of cam\n"); * ;A I0
printf("----------------------------\n"); e
iS~*@
printf( "input ro=");scanf("%f",&ro); xR+=F1y
printf("input h=");scanf("%f",&h); "o#N6Qu71
printf("input e=");scanf("%f",&e); 'G z>X :
printf("input dt0=");scanf("%f",&dt0); il^SGH
am=0;p=PI/180; H -('!^
printf("The initial data:ro=%f\n",ro); d5<@WI:wz
printf("h=%f e=%f dt0=%f\n",h,e,dt0); "aNl2 T
do K@xp!
{ro=ro+5; 8>q:Q<BB2
for(f=0;f<=dt0;f=f+2) 6S?a57;&W
{d=PI*f/dt0; 6_/oVvd
ydgl(); p'{ `Uvr
} oH~ZqX.3
} TnET1$@qr*
while(am>30*p); k f~71G+
printf("The intermediate results: am=%f\n",am/p); FxOhF03\=[
printf("ro=%f\n",ro); ?#]K54?
do 1xK'T_[
{ro=ro-1; [;B_ENV
if(ro<e) N>i1TM2
break; Cnf;5/
bu"Jb4_a>
for(f=0;f<=dt0;f=f+2) 2 cfzLW(
{d=PI*f/dt0; }i_[wq{E&
ydgl(); SxXh
N
} ixN>KwH
} Q6?+# }
while((am>30*p)||(am<=29.5*p)); Avw"[~Xd
printf("The final results:max alfa=%f\n",am/p); u&l2s&i
printf(" min ro=%f\n",ro); vj0`[X
getch(); /:dVW"A|
} *|AnL}GJ
void ydgl() GV)#>PL
{ d0=dt0*p; [:$j<}UmB
s=0.5*h*(1-cos(d)); [ d<|Cde
ds=0.5*h*PI*sin(d)/d0; A`u04Lm7
r=sqrt(ro*ro-e*e); ;}IF'ANA
if((s+r)==0) 77/y{#Sk
return; yAEOn/.~
al=atan((ds-e)/(s+r)); `9Ngax=_
if(al>am) 9BLz
am=al; ,G1|]
~
}