---
title: 3.13 Combining Logical Operators
description: "Logical operators can be combined to form expressions containing multiple conditions. Parentheses can be used to explicitly control how the conditions are grouped. ``` #include int main() { int age = 25; int has_id = 1; int has_permission = 0;…"
url: "https://edcret.in/docs/c-programming/operators-and-expressions/3-13-combining-logical-operators/"
updated: "2026-09-07"
category: C Programming / Operators and Expressions
---

# 3.13 Combining Logical Operators

Logical operators can be combined to form expressions containing multiple conditions. Parentheses can be used to explicitly control how the conditions are grouped.

```
#include <stdio.h>

int main()
{
    int age = 25;
    int has_id = 1;
    int has_permission = 0;

    if ((age >= 18 && has_id) || has_permission)
    {
        printf("Access granted\n");
    }

    return 0;
}
```

### Example Output

```
Access granted
```

### Explanation

The condition contains both `&&` and `||`:

```
(age >= 18 && has_id) || has_permission
```

The expression is grouped as:

```
(age >= 18 && has_id)
```

and:

```
has_permission
```

The first group is true because `age >= 18` is non-zero and `has_id` is also non-zero. Therefore, the `||` expression is true, regardless of the value of `has_permission`.

Parentheses make the intended grouping explicit. Without parentheses, `&&` has higher precedence than `||`, so an expression such as:

```
a || b && c
```

is evaluated as:

```
a || (b && c)
```