fork download
copy 
  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. int main(void)
  5. {
  6.  
  7.     float a,b,c,h,k,xv1,xv2,xv3,xv4,xv5,xv6,xv7,xv8,xv,yv1,yv2,yv3,yv4,yv5,yv6,yv7,yv8,yv;
  8.  
  9.     char cont,work;
  10.  
  11.     printf("Quadratic Equation Co-Ordinate Finder (2) - ax^2 + bx + c = y");
  12.     printf("\nMade in December 2012 by Will Dallas");
  13.  
  14.     start:
  15.  
  16.     printf("\n\na = ");
  17.     scanf("%f", &a);
  18.  
  19.     printf("b = ");
  20.     scanf("%f", &b);
  21.  
  22.     printf("c = ");
  23.     scanf("%f", &c);
  24.  
  25.     h=((b)/(2*a));
  26. 	k=(c)-((b*b)/(4*a));
  27.  
  28.  
  29. 	xv1=(-h)-4;
  30. 	xv2=(h*(-1))-3;
  31. 	xv3=(h*(-1))-2;
  32.     xv4=(h*(-1))-1;
  33.     xv=(h*(-1));
  34.     xv5=(h*(-1))+1;
  35. 	xv6=(h*(-1))+2;
  36. 	xv7=(h*(-1))+3;
  37.     xv8=(h*(-1))+4;
  38.  
  39.     yv1=((xv1+h)*(xv1+h))+k;
  40.     yv2=((xv2+h)*(xv2+h))+k;
  41.     yv3=((xv3+h)*(xv3+h))+k;
  42.     yv4=((xv4+h)*(xv4+h))+k;
  43.     yv=((xv+h)*(xv+h))+k;
  44.     yv5=((xv5+h)*(xv5+h))+k;
  45.     yv6=((xv6+h)*(xv6+h))+k;
  46.     yv7=((xv7+h)*(xv7+h))+k;
  47.     yv8=((xv8+h)*(xv8+h))+k;
  48.  
  49.     printf("\n\nPlot these points:");
  50.  
  51.     /* Solution */
  52.  
  53.     printf("\n- (%0.1f , %0.1f)", xv1, yv1);
  54.     printf("\n- (%0.1f , %0.1f)", xv2, yv2);
  55.     printf("\n- (%0.1f , %0.1f)", xv3, yv3);
  56.     printf("\n- (%0.1f , %0.1f)", xv4, yv4);
  57.     printf("\n- (%0.1f , %0.1f)", xv, yv);
  58.     printf("\n- (%0.1f , %0.1f)", xv5, yv5);
  59.     printf("\n- (%0.1f , %0.1f)", xv6, yv6);
  60.     printf("\n- (%0.1f , %0.1f)", xv7, yv7);
  61.     printf("\n- (%0.1f , %0.1f)", xv8, yv8);
  62.  
  63.     /* Working */
  64.  
  65.     printf("\n\nShow working? y/n:");
  66.     getchar();
  67.     scanf("%c", &work);
  68.  
  69.     if(work=='y'){
  70.         printf("\n\n    x | %0.1f  %0.1f  %0.1f  %0.1f  %0.1f  %0.1f  %0.1f  %0.1f  %0.1f", xv1, xv2, xv3, xv4, xv, xv5, xv6, xv7, xv8);
  71.         printf("\n    ------------------------------------------------------------------------");
  72.         printf("\n    y | %0.1f  %0.1f  %0.1f  %0.1f  %0.1f  %0.1f  %0.1f  %0.1f  %0.1f", yv1, yv2, yv3, yv4, yv, yv5, yv6, yv7, yv8);
  73.     }
  74.     if(work=='n'){
  75.  
  76.     }
  77.     else{
  78.  
  79.     }
  80.  
  81.     printf("\n\nDo you want to find more co-ordinates? y/n:");
  82.     getchar();
  83.     scanf("%c", &cont);
  84.  
  85.     if(cont=='y'){
  86.         goto start;
  87.         }
  88.     if(cont=='n'){
  89.  
  90.     }
  91.     else{
  92.  
  93.     }
  94.  
  95.  
  96.     return 0;
  97. }
Success #stdin #stdout 0s 5308KB
comments (?)
stdin
copy 
1
5
2
stdout
copy 
Quadratic Equation Co-Ordinate Finder (2) - ax^2 + bx + c = y
Made in December 2012 by Will Dallas

a = b = c = 

Plot these points:
- (-6.5 , 11.8)
- (-5.5 , 4.8)
- (-4.5 , -0.2)
- (-3.5 , -3.2)
- (-2.5 , -4.2)
- (-1.5 , -3.2)
- (-0.5 , -0.2)
- (0.5 , 4.8)
- (1.5 , 11.8)

Show working? y/n:

Do you want to find more co-ordinates? y/n:
https://ideone.com/TOBOBp
language:
C (gcc 8.3)
created:
15 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!