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  1. #include<stdio.h>
  2. #include<math.h>
  3.  
  4. int main()
  5. {
  6.     float a,b,c,d,x1,x2,real,imag;
  7.     printf("input:> \na b c:>\n");
  8.     scanf("%f%f%f",&a,&b,&c);
  9.     d=sqrt(b*b-4*a*c);
  10.     if(d>0){
  11.         x1=(-b+d)/(2*a);
  12.         x2=(-b-d)/(2*a);
  13.         printf("x=%.3f, %.3f",x1,x2);
  14.     }
  15.     else if(d==0){
  16.         x1=x2=-b/(2*a);
  17.         printf("x=%.3f, %.3f",x1,x2);
  18.     }
  19.  
  20.     else{
  21.         real=-b/(2*a);
  22.         imag=sqrt(-d/(2*a));
  23.         printf("Roots are:> %.3f+%.3fi and %.3f-%.3fi",real,imag,real,imag);
  24.     }
  25.     return 0;
  26. }
  27.  
  28.  
Success #stdin #stdout 0s 2172KB
comments (?)
stdin 
Standard input is empty
stdout 
input:> 
a b c:>
Roots are:> nan+nani and nan-nani
https://ideone.com/itFbEz
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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