# i nclude<stdio.h> gwT,D.'Ut
# i nclude<stdio.h> fM.|#eLi
# i nclude<math.h> z?[DW*
#define PI 3.1415926 7gcG|kKT
void ydgl(); l.l~K%P'h
float d,am,ro,e,h,p,dt0,d0,s,ds,r,al;
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int f; <Q)}
main() Xs@ ^D,
{ printf("Determaination the prime circle of cam\n"); K~T\q_ZPZ
printf("----------------------------\n"); a*ymBGF
printf( "input ro=");scanf("%f",&ro); )n@ 3@NV
printf("input h=");scanf("%f",&h); HC,@tfS
printf("input e=");scanf("%f",&e); aS G2K0
printf("input dt0=");scanf("%f",&dt0); F9r*ZyNlx
am=0;p=PI/180; ]{^vs'as\
printf("The initial data:ro=%f\n",ro); c F]3gM
printf("h=%f e=%f dt0=%f\n",h,e,dt0); Dj"=kL0
do : PkZ(WZ9
{ro=ro+5; >/bK?yT<
for(f=0;f<=dt0;f=f+2) ><c5Humr
{d=PI*f/dt0; 7!wnx.
ydgl(); Un{ln*AR\
} 0u2uYiE-l
} QPE.b-S
while(am>30*p); tC-KW~&
printf("The intermediate results: am=%f\n",am/p); k|'Mh0G0
printf("ro=%f\n",ro); [)vwg`]
do ~1sl.8tF
{ro=ro-1; *?Ef}:]
if(ro<e) =A6O}0z
break; 5N<v'6&=
olh3 R.M<
for(f=0;f<=dt0;f=f+2) 1Z8oN3
{d=PI*f/dt0; S'p`ECfVMA
ydgl(); -$z " 74
} LfXr(2u
} QC,(rB
while((am>30*p)||(am<=29.5*p)); yt:V+qdv
printf("The final results:max alfa=%f\n",am/p); n ]}2O4j
printf(" min ro=%f\n",ro); /+O8A}
getch(); N~_jiVD>
} 1[9j`~[([
void ydgl() Nj&%xe>].
{ d0=dt0*p; ld:alEo
s=0.5*h*(1-cos(d)); z
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ds=0.5*h*PI*sin(d)/d0; R9G)X]
r=sqrt(ro*ro-e*e); 3eP0v
if((s+r)==0) chzR4"WZFt
return; x]cZm^
al=atan((ds-e)/(s+r)); 1t=X: ]0j
if(al>am) K(fLqXE%
am=al; UDtbfc7bk
}