C Quiz - 102

Question 1

In the context of C data types, which of the followings is correct?

• “unsigned long long int” is a valid data type.
• “long long double” is a valid data type.
• “unsigned long double” is a valid data type.
• A), B) and C) all are valid data types.
• A), B) and C) all are invalid data types.

Question 2

In the context of the following printf() in C, pick the best statement.

C

i) printf(\"%d\",8);
ii) printf(\"%d\",090);
iii) printf(\"%d\",00200);
iv) printf(\"%d\",0007000);

• Only i) would compile. And it will print 8.
• Both i) and ii) would compile. i) will print 8 while ii) will print 90
• All i), ii), iii) and iv) would compile successfully and they will print 8, 90, 200 & 7000 respectively.
• Only i), iii) and iv) would compile successfully. They will print 8, 128 and 3584 respectively.

Question 3

Suppose a C program has floating constant 1.414, what\'s the best way to convert this as "float" data type?

• (float)1.414
• float(1.414)
• 1.414f or 1.414F
• 1.414 itself of "float" data type i.e. nothing else required.

Question 4

In the context of modulo operation (i.e. remainder on division) for floating point (say 2.1 and 1.1), pick the best statement.

• For floating point, modulo operation isn\'t defined and that\'s why modulo can\'t be found.
• (2.1 % 1.1) is the result of modulo operation.
• fmod(2.1,1.1) is the result of module operation.
• ((int)2.1) % ((int)1.1) is the result of modulo operation.

Question 5

In the context of the below program snippet, pick the best answer.

C

#include \"stdio.h\"
int arr[10][10][10];
int main()
{
 arr[5][5][5] = 123;
 return 0;
}

Which of the given printf statement(s) would be able to print arr[5][5][5]

C

(i) printf(\"%d\",arr[5][5][5]);
(ii) printf(\"%d\",*(*(*(arr+5)+5)+5));
(iii) printf(\"%d\",(*(*(arr+5)+5))[5]);
(iv) printf(\"%d\",*((*(arr+5))[5]+5));

• only (i) would compile and print 123.
• both (i) and (ii) would compile and both would print 123.
• only (i), (ii) and (iii) would compile but only (i) and (ii) would print 123.
• only (i), (ii) and (iii) would compile and all three would print 123.
• all (i), (ii), (iii) and (iv) would compile but only (i) and (ii) would print 123.
• all (i), (ii), (iii) and (iv) would compile and all would print 123.