17 Questions
What is the range of values that can be represented by a short data type?
−128 to 127
In scientific notation, what is the purpose of the power of 10?
To determine the range of the floating-point representation
What happens when a value is moved to a higher-order data type in the datatype hierarchy?
No information is lost
What is the purpose of the mantissa in floating-point representation?
To represent the decimal part of the number
What is the difference between float and double data types?
Float is for single-precision floating point numbers, double is for double-precision
What determines the precision of the floating-point representation?
The number of digits the computer allows for the mantissa
What happens when any of the quantities involved in a calculation are floating-point?
The entire calculation is done using floating-point arithmetic.
How can we ensure that a calculation is done using floating-point arithmetic in C?
By making one of the quantities of type float.
What is the purpose of keywords in C programming?
To provide special meaning to the compiler and build the language.
What is an identifier in C programming?
A word chosen by the programmer to name a variable or function.
What is the difference between a C program and a natural language document?
A C program has special symbols and keywords.
What is the purpose of using a placeholder like %.4f in the printf function?
To specify the format of the output
Why is the value of radius 1 in the expression radius=diameter/2?
Because the result of integer division is always an integer
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)
What is the advantage of using variables in a program?
It makes the program more readable and easier to understand
Why is the value 2.0 used in the expression float radius=diameter/2.0?
To ensure the result is a floating-point number
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
Test your knowledge of data types in programming, including integers, floats, and doubles. Learn about their ranges, representations, and differences.
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