Operators and Expressions - C Programming MCQ Questions and Answers

61

%f access specifier is used for . . . . . . . .

A) Strings B) Integral types C) Floating type D) All of the mentioned

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Answer & Solution

Answer: Option C

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62

What will be the output of the following C code?

#include <stdio.h>
printf("%d", sizeof('a'));

A) 1 B) 2 C) 4 D) None of the mentioned

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Answer & Solution

Answer: Option C

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63

Loss in precision occurs for typecasting from. . . . . . . .

A) char to short B) float to double C) long to float D) float to int

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Answer & Solution

Answer: Option D

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64

What will be the output of the following C code?

#include <stdio.h>
union temp
{
    char a;
    char b;
    int c;
}t;
int main()
{
    printf("%d", sizeof(t));
    return 0;
}

A) 1 B) 2 C) 4 D) 6

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Answer & Solution

Answer: Option C

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65

Select the odd one out with respect to type?

A) char B) int C) long D) float

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Answer & Solution

Answer: Option D

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66

Predict the data type of the following mathematical operation?

2 * 9 + 3 / 2 . 0

A) int B) long C) float D) double

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Answer & Solution

Answer: Option D

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67

How many digits are present after the decimal in float value?

A) 1 B) 3 C) 6 D) 16

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Answer & Solution

Answer: Option C

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68

What is the size of float in a 32-bit compiler?

A) 1 B) 2 C) 4 D) 8

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Answer & Solution

Answer: Option C

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69

Which among the following is never possible as an output for a float?

A) 3.666666 B) 3.666 C) 3 D) None of the mentioned

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Answer & Solution

Answer: Option D

Solution:

In C, a float can represent both whole numbers and decimal numbers due to its ability to store values in floating-point format.

Option A: 3.666666 is a valid float representation with precision.

Option B: 3.666 is also a valid float value, just with fewer decimal places.

Option C: 3 is an integer, but it can still be represented as a float (e.g., 3.0).

Therefore, all the options listed are valid float outputs depending on how the float is stored or printed.

Hence, the correct answer is Option D: None of the mentioned.

70

Size of an array can be evaluated by . . . . . . . .

(Assuming array declaration int a[10];)

A) sizeof(a); B) sizeof(*a); C) sizeof(a[10]); D) 10 * sizeof(a);

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Answer & Solution

Answer: Option A

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