Pleasee Ive been confused with this for ages

Question

So I'm trying to make it if the input is 100,400,200 the output is Isoceles triangle and if it's 100,200,500
The output is not a triangle, I've been trying to figure this out for ages and I think I'm to stupid to do so

/* Program for a triangle */
#include <stdio.h>
int main()
{
int a, b, c;
scanf("%d %d %d", &a, &b, &c);

if ((a >= b + c) || (b >= a + c) || (c <= a + b))
printf("Bukan Segitiga");
else
if ((a == b) && (b == c))
printf("Equilateral triangle");
else if ((a == b) || (b == c) || (a == c))
printf("Isoceles Triangle");
else
printf("Scalene Triangle");
return 0;
}

It's c++ by the way..
Basically to put more context
The question is
Input
5 5 5 = Equilateral triangle
1000 1000 500 = Isoceles triangle
100 200 500 = not a triangle
100 400 200 = Scalne triangle
But the catch is, when you input 100 400 200, the output is not a triangle. How can I fix this???

That "bukan segitiga" just means not a triangle in my country btw I forgot to change it

Please if someone can help me on this you'll save my life

Answer 1

This appears to be a c language program not cpp

https://sololearn.com/compiler-playground/cs1A2zC0e099/?ref=app

Answer 2

100 + 200 = is not greater than 400 thus not a scalene triangle

3 7 5
3 + 5 is greater than 7
is scalene triangle

Answer 3

My issue here is with the scalene triangle one
How could I make it so the input "100,400,200" would have the output of scalene triangle?