Triangle inequality

Q2. Triangle inequality

Note: In this question, you have to understand the code that is given and provide a testcase as explained in the problem statement.

The following function takes three positive integer arguments a, b, c representing the sides of a triangle (hence, these integers satisfy the triangle inequality). The function should return 3 if the triangle is equilateral, it should return 2 if the triangle is isosceles but not equilateral, and it should return 1 otherwise. Identify values a, b, c for which the given function does NOT work.

int triangleType(int a, int b, int c) {

if(a != b && b != c)

`return 1;`

else if(a == b && a == c)

`return 3;`

else

`return 2;`

}

Open up the code submission box below and write your test case where you would normally enter your code. Your input should be in the form: a, b, c where a, b and c are all positive integers.

#include <stdio.h>

int num[3]={ 1,2,1 };

int triangleType_bad(int a, int b, int c) { if(a != b && b != c) return 1; else if(a == b && a == c) return 3; else return 2; }

int triangleType_good(int a, int b, int c) { if((a == c) && (b != a) && (a <= b+c) && (b <= a+c) && (c <= a+b)) return 0;

if(a != b && b != c) return 1; else if(a == b && a == c) return 3; else return 2; }

int main() {

`if(triangleType_bad(num[0], num[1], num[2]) != triangleType_good(num[0], num[1], num[2]))`
    `printf("correct\n");`
`else`
    `printf("wrong\n");`

`return 0;`

}