Conditional statement behave different in different language

Question

In C programming, the following code block return False

int a=15, b=10,c=5;
    if(a>b>c)
    {
        printf("True");
    }
    else
    {
        printf("False");
    }

But in Python, the following block return True.

a = 15
b = 10
c = 5
if a > b > c:
    print("True")
else:
    print("False")

Edit: Found a solution from link, it explain very well in python perspective. And in C programming perspective this answer explain my question very well.

C and Python books can explain. These are two different languages with different syntax and rules. — Eugene Sh., Sep 26 '18 at 18:01
Another format of the same question: why this snippet does not compile in assembly? — Sourav Ghosh, Sep 26 '18 at 18:05
C and Python are *very* different languages, with very different rules. Do not assume that *any* operators behave the same way between the two languages. — John Bode, Sep 26 '18 at 21:35

score 6 · Accepted Answer · edited Sep 26 '18 at 19:17

They behave differently because that's how the languages are implemented.

With C, a > b > c is evaluated left to right. There is no concept of "operator chaining" (I'll get to this shortly), so the expression is evaluated as (a > b) > c which is 1 > c which is false (in C, logical expressions either return 1 or 0).

In python, OTOH, a > b > c evaluates to a > b and b > c (as specified in the documentation on comparisons), which turns out to be True in this case.

Conditional statement behave different in different language

1 Answers1