In C, the == operator is used to compare expressions for equality and return a Boolean value (true or false); the = operator is used for assignment, assigning the value of an expression to a variable and returning the assigned value. variable.
The difference between == and = in C
In the C programming language, the double equal sign (== ) and single equal sign (=) operators have different meanings and uses.
== Operator
Function: Used to compare whether the values of two expressions are equal.
Syntax:
<code class="cpp">expression1 == expression2</code>
Return value:
Example:
<code class="cpp">int a = 5; int b = 10; bool result = (a == b); // result 将为 false</code>
= Operator
Function: is used for assignment .
Syntax:
<code class="cpp">variable = expression</code>
Return value:
Example:
<code class="cpp">int a; a = 5; // a 的值现在为 5</code>
Key Difference
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