Posted By

jaircazarin on 10/10/08

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Algorithms Microsoft-Interview Geometry

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jaircazarin
wizard04
skammer

Type of Triangle

/ Published in: C

Given a, b, c find which kind of triangle can be build with those values.

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#include<stdio.h>
#define NONE -1
#define EQUILATERAL 0
#define ISOSCELES 1
#define SCALENE 3
 
int isTriangle(int a, int b, int c)
{
	if(a < 1 || b < 1 || c < 1)
		return NONE;
	if(a+b <= c || a+c <= b || c+b <= a)
		return NONE;
	if(a == b && a == c)
		return EQUILATERAL;
	if(a == b || b == c || a == c)
		return ISOSCELES;
	else
		return SCALENE;
}
 
int main()
{
	printf("%d\n", isTriangle(11,10,17));
	printf("%d\n", isTriangle(11,10,11));
	printf("%d\n", isTriangle(11,11,11));
	printf("%d\n", isTriangle(11,110,11));
	printf("%d\n", isTriangle(11,0,11));
	return 0;
}