1.Which of the following declaration is not supported by C?

A. String str;

B. char *str;

C. float str = 3e2;

D. Both String str; & float str = 3e2;

2.Which of the following declaration is illegal?
A. char *str = “Best C programming classes by Sanfoundry”;

B. char str[] = “Best C programming classes by Sanfoundry”;

C. char str[20] = “Best C programming classes by Sanfoundry”;

D. char[] str = “Best C programming classes by Sanfoundry”;

3.Which keyword is used to prevent any changes in the variable within a C program?

A. immutable

B. mutable

C. const

D. volatile

4.Which of the following is not a pointer declaration?

A. char a[10];

B. char a[] = {‘1’, ‘2’, ‘3’, ‘4’};

C. char *str;

D. char a;

5.Which of the following statement is false?

A. A variable defined once can be defined again with different scope

B. A single variable cannot be defined with two different types in the same scope

C. A variable must be declared and defined at the same time

D. A variable refers to a location in memory