How to use sizeof in C language

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1. The internal expression of sizeof () does not participate in the real operation, and the operation value is calculated at compile time.

2. Even if there is an assignment expression written inside sizeof, it will not be done in practice. Sizeof will only look at the type of Operand and will not access the corresponding space.

Example

Int main () {int a = 10 politics int b = sizeof (a = a + 1); printf ("% d% d\ n", a, b); / / 10 4return 0;} C language is a process-oriented, abstract general programming language, widely used in low-level development, using C language can be easily compiled and processed low-level memory.

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