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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int a,b,c ;
  5. 	float s,d,x1,x2 ;
  6. 	printf("nhap a,b,c :");
  7. 	scanf ("%d%d%d",&a,&b,&c);
  8. 	d = b*b-4*a*c;
  9. 	if (d<0 ){
  10. 	x1=x2=0;
  11. 	printf("\nphuong trình vô nghiem.");}
  12. 	if (d=0){
  13. 	x1=x2=-b/(2*a);
  14. 	printf("\nphuong trình có nghiem kép: X1=X2=%f",x1);}
  15. 	if (d>0){
  16. 	d=sqrt(d);
  17. 	x1=(-b+d)/(2*a);
  18. 	x2=(-b-d)/(2*a);
  19. 	printf("\nphuong trình có hai nghiem phân biet: X1=%f,X2=%f",x1,x2);}
  20. 	return 0; }
Success #stdin #stdout 0s 4516KB
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Standard input is empty
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nhap a,b,c :
phuong trình vô nghiem.
https://ideone.com/NLsQGk
language:
C (gcc 8.3)
created:
3 years ago
visibility:
public

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