Is 0 right or wrong in c++

In C, 0 equals false. In Boolean types, 0 represents false and non-zero values ​​represent true. For example, if the integer variable x is 5, the condition if (x) is true, and if the integer variable y is 0, the condition if (y) is false.

In C, is 0 false?

Answer: is

Detailed explanation:

In C, values ​​of integer type (such as int , short and long) are considered true except 0. Therefore, 0 is the only false value in C.

This is because in C's Boolean type (bool), there are only two values:

• true: represents a non-zero value
• false: represents 0

This means that in the conditional judgment, any non-zero value will be evaluated as true, and 0 will be evaluated as false. For example:

int x = 5;
if (x) {
  // x 为非零值，因此此代码块将执行
}

int y = 0;
if (y) {
  // y 为零值，因此此代码块不会执行
}

It is important to note that boolean values ​​in C can be implicitly converted to integers, where false is converted to 0 and true is converted to 1.

The above is the detailed content of Is 0 right or wrong in c++. For more information, please follow other related articles on the PHP Chinese website!