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# Data Types in Programming

Created by
@WellWishersQuail

### 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?

<p>To represent the decimal part of the number</p> Signup and view all the answers

### What is the difference between float and double data types?

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

### What determines the precision of the floating-point representation?

<p>The number of digits the computer allows for the mantissa</p> Signup and view all the answers

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

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

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

<p>By making one of the quantities of type float.</p> Signup and view all the answers

### What is the purpose of keywords in C programming?

<p>To provide special meaning to the compiler and build the language.</p> Signup and view all the answers

### What is an identifier in C programming?

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

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

<p>A C program has special symbols and keywords.</p> Signup and view all the answers

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

<p>To specify the format of the output</p> Signup and view all the answers

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

<p>Because the result of integer division is always an integer</p> Signup and view all the answers

### What is the advantage of using variables in a program?

<p>It makes the program more readable and easier to understand</p> Signup and view all the answers

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

<p>To ensure the result is a floating-point number</p> Signup and view all the answers

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

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

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