Typed Programming Languages

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Questions and Answers

What is the total number of bits in a float and a double combined?

  • 64
  • 96
  • 80
  • 96 + 32 (correct)

According to IEEE 754, what is the number of bits in the significand of a double?

  • 52 (correct)
  • 32
  • 64
  • 23

Why can't float and double types store all possible floating-point values exactly?

  • Because of unlimited number of bits in the significand
  • Because of the sign bit
  • Because of the exponent
  • Because of limited number of bits in the significand (correct)

What determines the range of values that a type can store?

<p>Number of bytes allocated for a type (A)</p>
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What is the purpose of a declaration in C?

<p>To associate a program variable with a type (B)</p>
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What is the purpose of the brackets in a declaration?

<p>To denote an optional part of the syntax (B)</p>
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What is the purpose of a semi-colon in a declaration?

<p>To conclude the declaration, making it a complete statement (C)</p>
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How do we group identifiers of variables that share the same type in a declaration?

<p>By separating the identifiers by commas (C)</p>
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What naming conventions must an identifier for a variable satisfy?

<p>It must satisfy certain naming conventions (B)</p>
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What is the minimum number of bits required to represent a short int in a 32-bit environment?

<p>16 bits (A)</p>
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Why should we avoid using C++ reserved words in C?

<p>For upward compatibility (B)</p>
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What is the purpose of the const qualifier in C?

<p>To hold a constant value (C)</p>
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How does C store characters and symbols?

<p>Using the ASCII collating sequence (A)</p>
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What is the primary purpose of a type in a typed programming language?

<p>To specify the range of values that can be stored and the operations that can be performed on those values (B)</p>
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What is the main difference between ASCII and EBCDIC collating sequences?

<p>The symbol order in ASCII differs from that in EBCDIC (A)</p>
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What is the purpose of the 2's complement rule in storing negative integers?

<p>To simplify the addition and subtraction circuits in the ALU (D)</p>
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What is the relation between a type and raw memory?

<p>A type defines how to store values in memory and which operations are admissible on those values (C)</p>
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What is the size of a char type in C?

<p>One byte (A)</p>
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What is the minimum number of bits required to represent a long long int in a 32-bit environment?

<p>64 bits (D)</p>
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What is the main difference between a float and a double in C?

<p>A float is used for single-precision and a double is used for double-precision (B)</p>
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What is the purpose of the type system in a typed programming language?

<p>To interpret the bit streams in memory (D)</p>
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What is the purpose of the IEEE Standard 754 for Binary and Floating-Point Arithmetic?

<p>To provide a model for floating-point arithmetic (D)</p>
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What is the primary difference between a char and an int type in C?

<p>The number of bytes occupied (D)</p>
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What is the purpose of identifying the contents of a variable using a type in C?

<p>To allocate memory for the variable (C)</p>
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How does C store integral data?

<p>In a binary form that represents the value exactly (C)</p>
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How many types of arithmetic types are described in this chapter?

<p>Four (B)</p>
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What is the purpose of the size specifiers in C?

<p>To ensure a type contains a minimum number of bits (A)</p>
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What is the primary purpose of the four most common types in the C language?

<p>To perform arithmetic calculations (D)</p>
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What is the relationship between the type of a variable and the range of values that can be stored in it?

<p>The type determines the range of values that can be stored (B)</p>
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What is the benefit of using different types to store different information in C?

<p>It allows for more efficient memory allocation (B)</p>
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