What memory is allocated to a structure variable by the system when it is defined?

When defining a structure variable, the memory allocated to it by the system is the sum of the memory required by each member; the memory length occupied by the structure variable is the sum of the memory lengths occupied by each member; each member is separately Occupies its own memory unit, and the memory length occupied by the union variable is equal to the length of the longest member.

The operating environment of this article: windows7 system, DELL G3 computer, C.

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When describing a structure variable, the memory allocated to it by the system is the sum of the memory required by each member.

The memory length occupied by structure variables is the sum of the memory lengths occupied by each member. Each member occupies its own memory unit, and the memory length occupied by the union variable is equal to the length of the longest member.

Related introduction:

C provides many basic data types (such as int, float, double, char, etc.) for users to use. However, since the problems that programs need to deal with are often complex and diverse, existing data types cannot meet the usage requirements. Therefore, C allows users to declare some types according to their needs. The types that users can declare themselves include structure types (structure), union types (union), enumeration types (enumeration), class types (class), etc. These are collectively called User-defined type (UDT).

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