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6. By default a real number is treated as a
A. float
B. double
C. long double
D. far double
7. Which of the following is not a user-defined data type?
A. 1
B. 2
C. 3
D. Both 1 and 2
8. Is the following statement a declaration or definition?
extern int i;
A. Declaration
B. Definition
C. Function
D. Error
9. Identify which of the following are declarations
1 : extern int x;
2 : float square ( float x ) { … }
3 : double pow(double, double);
A. 1
B. 2
C. 1 and 3
D. 3
10. In the following program where is the variable getting defined and where it is getting declared?
A. extern int a is declaration, int a = 20 is the definition
B. int a = 20 is declaration, extern int a is the definition
C. int a = 20 is definition, a is not defined
D. a is declared, a is not defined
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