What is a == b in C?

What does == mean in C?

a == b is a test if a and b are equal. a = b is called an assignment, which means to set the variable a to having the same value as b.

What is the output a == b in C?

In C, a == b == c is equivalent to (a == b) == c , where a == b yields 1 if true, 0 otherwise.

Is a == b == C valid?

Since C language does not support chaining comparison like a==b==c; each equal to operator (==) operates on two operands only.

Can we use == in C?

In C, string values (including string literals) are represented as arrays of char followed by a 0 terminator, and you cannot use the == operator to compare array contents; the language simply doesn't define the operation.