When a program lets the user know that an invalid choice has been made this is known as?
Explanation: Input validation is also known as data validation which is used for validate or test the user input . In this program we input a age from user and validate this user input that . If user enter age > 18 then it will eligible for vote.
When an if statement is placed within the conditionally executed code of another if statement?
8. When an if statement is placed within the conditionally-executed code of another if statement, this is known as nesting.
What is the output of the following code segment if the user enters 90 for the score?
What is the output of the following code segment if the user enters 90 for the score? cout << “You passed the test.” You just studied 60 terms!
When determining whether a number is inside a numeric range it’s best to use this logical operator?
When determining whether a number is inside a range, which logical operator is it best to use? Operation to find the number within the range: To determine the given number is within the range, the logical AND (&&) is useful. Logical AND connects two Boolean expressions into one compound expression.
When C++ is working with an operator it strives to convert the operands to the same type True False?
When C++ is working with an operator, it strives to convert the operands to the same type. When a program uses the setw manipulator, the iosetwidth header file must be included in a preprocessor directive. In C++, it is impossible to display the number 34.789 in a field of 9 spaces with 2 decimal places of precision.
When a user types values at the keyboard those values are the first stored group of answer choices?
Terms in this set (26) -When the user types values at the keyboard, those values are first stored in an area of memory known as they keyboard buffer.
When the increment operator precedes its operand as in ++ num1 the expression is in this mode?
Review Written Exam
| A | B |
|---|---|
| prefix | When the increment operator precedes its operand, as in ++num1, the expression is in _______ mode. |
| > | In the statement if (x++ > 10), the _____ operator is used first |
| sentinel | A __________ is a special value that marks the end of a list of values. |
Which character signifies the beginning of an escape sequence?
16 Cards in this Set
| Which character signifies the beginning of an escape sequence? | \ |
|---|---|
| These are used to declare variables that can hold real numbers. | Floating point data types |
Which escape sequence causes the cursor?
Escape sequence: causes cursor to skip over to the next tab stop. Escape sequence: return. causes cursor to go to beginning of current line, not the next line.
Which escape sequence causes the cursor to move to the beginning of the next line?
Fig 2.2. Escape sequences.
| Escape sequence | Description |
|---|---|
| \n | Newline. Position the screen cursor to the beginning of the next line. |
| \t | Horizontal tab. Move the screen cursor to the next tab stop. |
| \r | Carriage return. Position the screen cursor to the beginning of the current line; do not advance to the next line. |
Which of the following defines a double precision floating point variable named payCheck?
comp sci
| Question | Answer |
|---|---|
| Which of the following defines a double-precision floating point variable named payCheck? | double payCheck; |
| A character literal is enclosed in ________ quotation marks, whereas a string literal is enclosed in ________ quotation marks. | single, double |
IS are used to display information on the computer’s screen?
cout objects are used to display information on the computer’s screen.
Is the part of the program that has access to the variable?
variable’s scope
When the final value of an expression is assigned to a variable it will be converted to?
Rule 3: When the final value of an expression is assigned to a variable, it will be converted to the data type of that variable. both int s: area = length * width; Since length and width are both ints, they will not be converted to any other data type.
When C++ is working with an operator?
When C++ is working with an operator, it strives to convert operands to the same type. the specific rules that govern the evaluation of mathematical expressions.
When a program uses the SETW manipulator?
When a program uses the setw manipulator, the iosetwidth header file must be included in a preprocessor directive. In C++, it is impossible to display the number 34.789 in a field of 9 spaces with 2 decimal places of precision. The fixed manipulator causes a number to be displayed in scientific notation.
Which of the following is are valid C++ identifiers?
The identifier can be started with a letter ‘A’ to ‘Z’ or ‘a’ to ‘z’ or from underscore (_) which is followed by zero or more letters, underscores and digits (0 to 9). The C++ does not allow punctuation characters such as $, % and @ within identifiers. Some of the valid identifiers are: shyam, _max, j_47, name10.
What are identifiers in C give examples?
C identifiers represent the name in the C program, for example, variables, functions, arrays, structures, unions, labels, etc. An identifier can be composed of letters such as uppercase, lowercase letters, underscore, digits, but the starting letter should be either an alphabet or an underscore.
How many valid identifiers are given in the following list?
There are 53 characters, to represent identifiers. They are 52 alphabetic characters (i.e., both uppercase and lowercase alphabets) and the underscore character. The underscore character is considered as a letter in identifiers.
What are the valid identifiers?
A valid identifier can have letters (both uppercase and lowercase letters), digits and underscores. The first letter of an identifier should be either a letter or an underscore. You cannot use keywords like int , while etc. as identifiers.
Which is invalid identifier with the main method?
Which of the below is invalid identifier with the main method? Explanation: main method cannot be private as it is invoked by external method. Other identifier are valid with main method.
Is Data_rec a valid identifier?
Ans. Data_rec, _data and data1 are valid identifiers because there first character is either a letter or an underscore.
Is class a valid identifier?
A: In Java, all identifiers must begin with a letter, an underscore, or a Unicode currency character. Any other symbol, such as a number, is not valid. So an identifier includes all package, class, method, parameter, and variable names. So in the case of 7ofHearts , you are simply out of luck.
Is Class A keyword in Java?
class , class is not a keyword, neither a static field in the class ClientResponse . The keyword is the one that we use to define a class in Java. class is a short-cut to the instance of Class that represents the class ClientResponse .
Is void a valid identifier?
As we discussed there are some words in Java that cannot be used as identifiers. Some of them are words such as goto, const, class, void, public and so on… This means that there are a set of words that have a special meaning to the compiler. You can not use the words as your variable names or class names.
Which among the following is not a valid identifier?
Answer. 8thClass is not a valid identifier as identifier name must not start with a digit.
Which of the following Cannot be used as wild identifier?
Variable name, function name, structure name etc. are called identifiers. Spaces are not used in names.
Which of following is not a valid name for AC variable?
Answer: Option (C) 123var is not a valid C variable name. Explanation: For naming a C variable, capital letters, small letters, underscore, and even numbers can be used.
Which of the following is not valid identifier in C?
Thus, float or double, and int are invalid identifiers, whereas Double, Int, and INT are valid identifiers because the case of letters has been altered. If one or more characters in the name are in uppercase, it is a safe bet against a keyword being used as name of a variable.