What is the expression of logical truth value in C language?

Logical truth values ​​in C language are represented as 1 (true) and 0 (false) respectively. Logical operators include: &&: logical AND (true when both operands are true) ||: logical OR (true when either operand is true)!: logical NOT (reverse the operands)

Logical truth value representation in C language

In C language, logical truth value is represented by the following integers:

• Logical true (true): 1
• Logical false (false): 0

Logical operators

The C language provides the following logical operators:

• &&: logical AND (if both operands are true , the result is true)
• ||: Logical OR (if any operand is true, the result is true)
• ! : logical NOT (reverses the operands)

Example

The following code snippet shows how to use logical operators:

int a = 1;
int b = 0;

// 检查 a 是否为真且 b 是否为假
if (a && !b) {
    printf("a 为真且 b 为假\n");
}

// 检查 a 是否为真或 b 是否为假
if (a || b) {
    printf("a 为真或 b 为真\n");
}

In the above example, the condition a && !b is true because a is true and b is false. The condition a || b is also true because a is true.

Note

• In C language, any non-zero value represents true, while 0 represents false.
• Logical operators have high priority and usually take precedence over comparison operators.

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