Question

of the following are invalid variables? Give reasons:
(a) C (7,2)
(b) $
(c) A2$
(d) TOTAL
(e) PRICE 2​

Answer 1

Answer:

a) C(7,2)

Explanation:

because it's the function calls expression

Answer 2

Variable declaration:

invalid varaible is "option a and option e"

Explanation:

• In the given question "Option a, and Option e" were incorrect because, in option a, it uses the C with a parameter, that accepts integer number in parameter, which is used mainly function calling.  
• In option e, wide space is illegal in variable declaration.  
• In the above example option b, c and d is correct because they all were used in a variable declaration, that can be explained by the below example:

Example:

#include <iostream> //defining header file

using namespace std;

int main() //defining main method

{

   int  A2$ =10; //defining integer variable and assign values

   int TOTAL=12;//defining integer variable and assign values

   int $=121;//defining integer variable and assign values

   cout<< A2$<<endl; //print values

   cout<<TOTAL<<endl;//print values

   cout<<$<<endl;//print values

   return 0;

}

Output:

10

12

121  

Learn more:

• Variable declaration rule: https://brainly.in/question/10549411