---
title: 3.10 Logical AND
description: "The logical AND operator `&&` combines two conditions. The result is `1` only when both operands are non-zero; otherwise, the result is `0`. ``` #include int main() { int age = 25; int has_id = 1; printf(\"Result: %d\\n\", age >=…"
url: "https://edcret.in/docs/c-programming/operators-and-expressions/3-10-logical-and/"
updated: "2026-09-07"
category: C Programming / Operators and Expressions
---

# 3.10 Logical AND

The logical AND operator `&&` combines two conditions. The result is `1` only when both operands are non-zero; otherwise, the result is `0`.

```
#include <stdio.h>

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

    printf("Result: %d\n", age >= 18 && has_id);

    return 0;
}
```

### Example Output

```
Result: 1
```

### Explanation

The expression:

```
age >= 18 && has_id
```

contains two operands:

```
age >= 18
has_id
```

`age >= 18` produces `1` because `age` is `25`. `has_id` also has the non-zero value `1`.

Since both operands are non-zero, the `&&` expression produces `1`.

The logical AND operator follows these results:

| Operand 1 | Operand 2 | Result |
| --- | --- | --- |
| `0` | `0` | `0` |
| `0` | non-zero | `0` |
| non-zero | `0` | `0` |
| non-zero | non-zero | `1` |

C also uses **short-circuit evaluation** for `&&`. If the left operand evaluates to `0`, the right operand is not evaluated because the overall result is already known to be false.