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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. int main()
  5. {
  6. 	int x1,x2,x3,y1,y2,y3,a;
  7. 	float p;
  8.  
  9. 	printf("Enter the co-ordinates of frist vertix=");
  10. 	scanf("%d%d",&x1,&y1);
  11.  
  12. 	printf("\nEnter the co-ordinates of second vertix=");
  13. 	scanf("%d%d",&x2,y2);
  14.  
  15. 	printf("\nEnter the co-ordinates of third vertix=");
  16. 	scanf("%d%d",&x3,&y3);
  17.  
  18. 	a=x1*(y2-y3)+x2*(y3-y1)+x3*(y1-y2);
  19. 	p=abs(a)/2;
  20.  
  21. 	printf("\nArea of triangle is=%f",a);
  22.  
  23. 	return 0;
  24. }
Success #stdin #stdout 0.01s 5288KB
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stdin
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Standard input is empty
stdout
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Enter the co-ordinates of frist vertix=
Enter the co-ordinates of second vertix=
Enter the co-ordinates of third vertix=
Area of triangle is=0.000000
https://ideone.com/vhC39g
language:
C (gcc 8.3)
created:
99 days ago
visibility:
public

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