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  1. #include<stdio.h>
  2. float fD(float a,float b,float c,float d,float e,float f,float g,float h,float i)
  3. {
  4.     float Dg;
  5.     Dg=a*(e*i-h*f)+b*(g*f-d*i)+c*(d*h-g*e);
  6.     return Dg;
  7. }
  8. void main()
  9. {
  10.     float a1,a2,a3,b1,b2,b3,c1,c2,c3,d1,d2,d3;
  11.     printf("\na1 ? ");
  12.     scanf("%f",&a1);
  13.     printf("\nb1 ? ");
  14.     scanf("%f",&b1);
  15.     printf("\nc1 ? ");
  16.     scanf("%f",&c1);
  17.     printf("\nd1 ? ");
  18.     scanf("%f",&d1);
  19.     printf("\na2 ? ");
  20.     scanf("%f",&a2);
  21.     printf("\nb2 ? ");
  22.     scanf("%f",&b2);
  23.     printf("\nc2 ? ");
  24.     scanf("%f",&c2);
  25.     printf("\nd2 ? ");
  26.     scanf("%f",&d2);
  27.     printf("\na3 ? ");
  28.     scanf("%f",&a3);
  29.     printf("\nb3 ? ");
  30.     scanf("%f",&b3);
  31.     printf("\nc3 ? ");
  32.     scanf("%f",&c3);
  33.     printf("\nd3 ? ");
  34.     scanf("%f",&d3);
  35.     float D,Dx,Dy,Dz,x,y,z;
  36.     D=fD(a1,b1,c1,a2,b2,c2,a3,b3,c3);
  37.     Dx=fD(d1,b1,c1,d2,b2,c2,d3,b3,c3);
  38.     Dy=fD(a1,d1,c1,a2,d2,c2,a3,d3,c3);
  39.     Dz=fD(a1,b1,d1,a2,b2,d2,a3,b3,d3);
  40.     x=Dx/D;
  41.     y=Dy/D;
  42.     z=Dz/D;
  43.     printf("\n x= %f\n y= %f\n z= %f\n",x,y,z);
  44. }
  45.  
Runtime error #stdin #stdout 0s 2172KB
comments (?)
stdin 
Standard input is empty
stdout 
a1 ? 
b1 ? 
c1 ? 
d1 ? 
a2 ? 
b2 ? 
c2 ? 
d2 ? 
a3 ? 
b3 ? 
c3 ? 
d3 ? 
 x= -nan
 y= -nan
 z= -nan
https://ideone.com/13VCxz
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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