turbo c - Sequence of if-else if in C -

i' using following logic testing whether triangle isosceles, equilateral, scalene or right angled.

if (side1 == side2 || side2 == side3 || side1 == side3)     printf("isosceles triangle."); else if (side1 == side2 && side2 == side3 && side3 == side1)     printf("equilateral triangle"); 

i output sides 3 3 3 isosceles not equilateral when interchange logic write logic of equilateral first equilateral. can't understand what's happening?

you shouldn't use else in case.

code:

if (condition)      code else if (condition2)      code2 

checks if condition true. if executes code. if condition false, condition2 checked , code2 executed.