C Questions and Answers – Error Handling

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

Pre-requisite for this C MCQ set: Advanced C Programming Video Tutorial.

1. _______ occurs when a result is too large in magnitude to represent errors as a floating-point value of the required type.
a) underflow
b) significance loss
c) domain
d) overflow
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2. What occurs when a result has nowhere near the number of significant digits indicated by its type.
a) domain
b) underflow
c) overflow
d) significance loss
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3. What error occurs when a result is undefined for a given argument value?
a) significance loss
b) underflow
c) overflow
d) domain
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4.______ is reported on a domain error.
a) EDOM
b) ERANGE
c) Significance loss
d) Underflow
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5. ERANGE is reported on an overflow or an underflow.
a) true
b) false
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6. What will be the output of the following C code?

errno = 0;
y = sqrt(2);
if(errno == EDOM)
printf("Invalid value\n");
else
printf("Valid value\n");

a) Invalid value
b) Valid value
c) No output
d) Compile error
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7. What will be the output of the following C code?

errno = 0;
y = sqrt(-10);
if(errno == EDOM)
printf("Invalid value \n");
else
printf("Valid value\n");

a) Invalid value
b) Valid value
c) No output
d) Compile error
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8. errno causes trouble in two subtler ways(vague and explicit).
a) true
b) false
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9. No library function will store a zero in errno.
a) true
b) false
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10. __________ tells the compiler that this data is defined somewhere and will be connected with the linker.
a) errno
b) extern
c) variable
d) yvals
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