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  1. #include<stdio.h>
  2. #include<stdlib.h>
  3. #include<math.h>
  4. int main(){
  5.     float a,b,c,d,r1,r2,realp,imagp;
  6.     printf("enter the coefficient ");
  7.     scanf("%f%f%f",&a,&b,&c);
  8.     if(a*b*c==0)
  9.     {
  10.         printf("enter a non 0 value ");
  11.         exit(0);
  12.  
  13.     }
  14.     d=b*b-4*a*c;
  15.     if(d==0)
  16.     {
  17.         printf("roots are equal ");
  18.         r1=-b/(2*a);
  19.          r2=-b/(2*a);
  20.          printf("root1=root2=%f",r1 );
  21.  
  22.     }
  23.     else if(d>0)
  24.     {
  25.         printf("roots are real and distinct ");
  26.         r1=(-b+sqrt(d)/(2*a));
  27.         r2=(-b-sqrt(d)/(2*a ));
  28.         printf("root1=%f,root2=%f ",r1,r2);
  29.  
  30.     }
  31.    else{
  32.        printf(" roots are imaginary ");
  33.        realp=-b/(2*a);
  34.        imagp=sqrt(fabs(d)/(2*a ));
  35.        printf("root1=%f+i*% f\n",realp,imagp);
  36.         printf("root2=%f-i*%f\n  ",realp,imagp);
  37.  
  38.    }
  39.    return 0;
  40. }
Success #stdin #stdout 0s 5296KB
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stdin
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Standard input is empty
stdout
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enter the coefficient enter a non 0 value
https://ideone.com/LYvsGE
language:
C (clang 8.0)
created:
255 days ago
visibility:
public

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