C vs. Python - operator precedence in conditional statements

Question

How does the C process a conditional statement such as n >= 1 <= 10?

I initially thought that it would get evaluated as n >= 1 && 1 <= 10, as it would be evaluated in Python. Since 1 <= 10 is always true, the second porition of the and is redundant (the boolean value of X && True is equivalent to the boolean value of X).

However, when I run it with n=0, the conditional gets evaluated to true. In fact, the conditional always seems to evaluate to true.

This was the example I was looking at:

if (n >= 1 <= 10)
  printf("n is between 1 and 10\n");

Answer 1

>= operator is evaluated from left to right, so it is equal to:

if( ( n >= 1 ) <= 10)
    printf("n is between 1 and 10\n");

The first ( n >= 1 ) is evaluated either as true or false, which is equal to either 1 or 0. Then that result of 1 or 0 is compared to result <= 10 which will always evaluate to true. Thus the statement printf("n is between 1 and 10\n"); will always be printed