~What does 1 mean and how to express it in C language?

In C language, the ~ symbol represents a logical NOT operation (bitwise inversion), which inverts the binary bits in the operand, changing 0 to 1 and 1 to 0.

～1 represents in C language

In C language, ～ The symbol represents the logical NOT operation (bitwise negation). It inverts each binary bit in the operand, i.e. 0 becomes 1 and 1 becomes 0.

Syntax:

<code class="c">~operand</code>

Among them, operand is the expression to be bitwise inverted.

Example:

<code class="c">int x = 5; // 二进制表示：0101
int y = ~x; // 二进制表示：1010</code>

In this case, the value of y is -6 because the binary representation after bitwise negation is 1010, converted to decimal is -6.

Note:

• ~ The operator has a higher priority than other arithmetic operators (such as addition, subtraction). The
• ~ operator can be applied to any integer type of data, including int, long, and short.

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