Which of the following is not a valid variable name declaration?
A. float PI = 3.14;
B. double PI = 3.14;
C. int PI = 3.14;
D. #define PI 3.14
Answer:A
Which of the following is not a valid variable name declaration?
A. float PI = 3.14; B. double PI = 3.14; C. int PI = 3.14; D. #define PI 3.14
Explanation:#define PI 3.14 is a macro preprocessor, it is a textual substitution.