Variables in c

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Welcome to c programming learning

After the data types main thing is to know the variables. That are not to be predefined keywords like return,if .... etc.
  Rules to be a variable is-----
 1.It may contain letters, numbers, underscore (_).
2.  It must not contain any other sign marks like ;,:,-,+.
3.variable is not to be a keyword.

Example:
 int a;
Here int is data type, a is variable.

int _3a;
This is valid one.
int 3_a;
This is also valid

Identifier:
Identifier is also like as variable.
int a; this identifier. Identifier must contain data type followed by variable.
Example:

 int a;


And then next topic is operators.....
Connect next post to learn operators...
.
Thank you 😊


A small task for you all.... That is please comment output of the below program

 #include<studio.h>
 void main()
{
  int a=054;
  printf("%d",a);
}

   What is output of this code..........?

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