6.
By default a real number is treated as a
A. float B. double
C. long double D. far double
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7.
Which of the following is not user defined data type?
1 :
struct book
{
char name[10];
float price;
int pages;
};
2 :
long int l = 2.35;
3 :
enum day {Sun, Mon, Tue, Wed};
A. 1 B. 2
C. 3 D. Both 1 and 2
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8.
Is the following statement a declaration or definition?
extern int i;
A. Declaration B. Definition
C. Function D. Error
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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
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10.
In the following program where is the variable a getting defined and where it is getting declared?
#include<stdio.h>
int main()
{
extern int a;
printf(“%d\n”, a);
return 0;
}
int a=20;
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