An area chart is used to display ________
A) trends in data over time
B) the size of individual components proportional to a whole
C) comparisons of two or more individual items
D) the magnitude of change over time
D
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If a certain object’s data members need to be frequently modified by const functions, it is best to:
a. Declare the member values non-const. b. Declare the member values mutable. c. Use const_cast to make the member values modifiable. d. Use static_cast to make the member values modifiable.
Answer the following statements true (T) or false (F)
1. A local variable of a function is not visible in any other function. 2. A test of an individual function is called a top-down test. 3. An integer output parameter is represented in C using a parameter of type int *. 4. Referencing an identifier outside its scope will cause a run-time error. 5. Every function prototype must include at least one formal parameter.
The JPEG format uses ____ compression to reduce file size.
a. native b. proprietary c. lossy d. lossless
Which of the following statements about function definition is false?
A. The function definition contains the code needed to complete the task. B. The function definition is terminated by a semicolon (;). C. The function body contains local declarations and statements. D. The parameters in the function definition can be coded without a name. E. Void functions do not need a return statement.