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Data Types in Programming

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Questions and Answers

What is the range of values that can be represented by a short data type?

−231 to 231

−128 to 127 (correct)

−1 to 1

−215 to 215

In scientific notation, what is the purpose of the power of 10?

To indicate the position of the decimal point

To separate the integral and fractional parts

To determine the precision of the floating-point representation

To determine the range of the floating-point representation (correct)

What happens when a value is moved to a higher-order data type in the datatype hierarchy?

The value is truncated

No information is lost (correct)

Information may be lost

The value is rounded

What is the purpose of the mantissa in floating-point representation?

To represent the decimal part of the number Signup and view all the answers

What is the difference between float and double data types?

Float is for single-precision floating point numbers, double is for double-precision Signup and view all the answers

What determines the precision of the floating-point representation?

The number of digits the computer allows for the mantissa Signup and view all the answers

What happens when any of the quantities involved in a calculation are floating-point?

The entire calculation is done using floating-point arithmetic. Signup and view all the answers

How can we ensure that a calculation is done using floating-point arithmetic in C?

By making one of the quantities of type float. Signup and view all the answers

What is the purpose of keywords in C programming?

To provide special meaning to the compiler and build the language. Signup and view all the answers

What is an identifier in C programming?

A word chosen by the programmer to name a variable or function. Signup and view all the answers

What is the difference between a C program and a natural language document?

A C program has special symbols and keywords. Signup and view all the answers

What is the purpose of using a placeholder like %.4f in the printf function?

To specify the format of the output Signup and view all the answers

Why is the value of radius 1 in the expression radius=diameter/2?

Because the result of integer division is always an integer Signup and view all the answers

What would be the result of the expression radius=diameter/2 if diameter is 3 and 2 is replaced with 2.0?

(radius would be 1.5) Signup and view all the answers

What is the advantage of using variables in a program?

It makes the program more readable and easier to understand Signup and view all the answers

Why is the value 2.0 used in the expression float radius=diameter/2.0?

To ensure the result is a floating-point number Signup and view all the answers

What is the difference between the expressions float radius=diameter/2 and float radius=diameter/2.0?

The first expression results in an integer, the second results in a floating-point number Signup and view all the answers

Data Types in Programming

Choose a study mode

Podcast

Questions and Answers

What is the range of values that can be represented by a short data type?

In scientific notation, what is the purpose of the power of 10?

What happens when a value is moved to a higher-order data type in the datatype hierarchy?

What is the purpose of the mantissa in floating-point representation?

What is the difference between float and double data types?

What determines the precision of the floating-point representation?

What happens when any of the quantities involved in a calculation are floating-point?

How can we ensure that a calculation is done using floating-point arithmetic in C?

What is the purpose of keywords in C programming?

What is an identifier in C programming?

What is the difference between a C program and a natural language document?

What is the purpose of using a placeholder like %.4f in the printf function?

Why is the value of radius 1 in the expression radius=diameter/2?

What would be the result of the expression radius=diameter/2 if diameter is 3 and 2 is replaced with 2.0?

What is the advantage of using variables in a program?

Why is the value 2.0 used in the expression float radius=diameter/2.0?

What is the difference between the expressions float radius=diameter/2 and float radius=diameter/2.0?

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