What does +- mean in C language?

In C language - operator is a compound assignment operator, used to add a value to a variable, equivalent to variable = variable value. It is used when a value needs to be added to a variable multiple times and can simplify code and improve readability. But only for numeric types.

The meaning of - in C language

In C language, the - operator is a compound assignment operator , used to add a value to a variable. Its syntax is as follows:

<code>variable +- value;</code>

where:

• variable is the variable to be modified.
• value is the value to be added to the variable.

- operator is equivalent to the following code:

<code>variable = variable + value;</code>

For example, the following code increases the value of x by 5:

<code>int x = 10;
x += 5;</code>

Now, The value of x becomes 15.

Usage

- Operator is typically used when a value needs to be added to a variable multiple times. It simplifies code and improves readability. For example, the following code uses = to calculate the sum of the elements of an array:

<code>int sum = 0;
for (int i = 0; i < n; i++) {
    sum += arr[i];
}</code>

Note

It should be noted that the - operator can only be used with numeric types. If you try to use it with non-numeric types, the compiler will complain.

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