What does this car logo light on Renault's landscape dashboard mean?

It is only used in statement blocks. Initialization can be any expression. Its characteristic is that when the execution process enters the statement block, initialization operation is carried out, and there is no default value. C language provides four storage categories described by storage descriptors auto, register, extern and static. Four storage class descriptors have two storage cycles: automatic storage cycle and static storage cycle. Where auto and register correspond to automatic storage cycles. When a variable with automatic storage cycle enters the program block that declares it, it is established. It exists when the block is active and is revoked when it exits the block. Variables defined inside the function become local variables. In some C language textbooks, local variables are called automatic variables, which is similar to using optional keyword A.

The convention for defining local variables is consistent.