C++ provides several assignment operators, the simplest assignment operator is "=". An expression with an assignment operator is called an assignment expression.
If you add a semicolon after the assignment expression, it becomes an assignment statement. The difference between assignment expressions and assignment statements is: assignment expressions can be used as part of a more complex expression and continue to participate in operations; assignment statements cannot.
C++ assignment operator and assignment expression
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Origin blog.csdn.net/weixin_55323026/article/details/114963177
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