C Questions and Answers – Signed Qualifier

This set of C Multiple Choice Questions & Answers (MCQs) focuses on “Signed Qualifier”.

Pre-requisite for C Signed Qualifier MCQ set: Video Tutorial on C Data Types – Bits & Bytes.

1. In a signed integer, the sign is represented by ___________
a) Least significant bit
b) Most significant bit
c) System dependent
d) The mean of the most significant bit and the least significant bit
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2. Sign qualifiers can be applied to double.
a) True
b) False
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3. What will be the output of the following C code?

#include<stdio.h>
int main()
{
    signed char ch= ‘a’;
    printf(“%u”,ch);
    return 0;
}

a) -65
b) 65
c) -97
d) 97
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4. What will be the output of the following C code?

#include<stdio.h>
main()
{
    signed char a[]= “BAT”;
    printf(“%c”, a[1]);
    return 0;
}

a) -A
b) BAT
c) A
d) 65
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5. What is the default state of an integer in c language?
a) Signed
b) Unsigned
c) System dependent
d) There is no default state
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6. Suppose we have: int a=100; (signed by default).
If we want to convert this to an unsigned long integer, we can do this by making the following small change:
a) int a=lu100;
b) int a= 100ul;
c) int a=uu100;
d) int a=100uu;
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7. What is the binary representation of the integer -14?
a) 11110
b) 01110
c) 01100
d) 11100
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8. Which of the following header files must necessarily be included in your code, if you want to find the minimum value of unsigned short integer?
a) stdio.h
b) stdlib.h
c) limits.h
d) math.h
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9. What will be the error in the following C code?

main()
{
    long float a=-25.373e22;
    printf("%lf",a);
}

a) Negative number cannot be assigned to float data type
b) Long and float cannot be used together
c) Does not result in error
d) Logical error
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10. What will be the output of the following C code?

main()
{
    unsigned a=10;
    long unsigned b=5l;
    printf(“%lu%u”,a,b);
}

a) 105
b) 510
c) 10
d) error
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