ISDS 505 Midterm Chapter 2 Methods Already Rated A+

ISDS 505 Midterm Chapter 2 Methods Already Rated A+ When you use a number such as 45 in a C# program, the number is a literal constant A variable declaration must contain all of the following a data type, an identifier, and an ending semicolon True or false? Two variables of the same type can be declared in the same statement. true Assume that you have two variables declared as int var1 = 3; and int var 2= 8; Write the statement that would WriteLine "838" using placeholders. WriteLine("{0}{1}{0}", var2, var1); Assume that you have a variable declared as int var1 = 3; What is the value of 22 % var1? a. 21 b. 7 c. 1 d. 0 c. 1 Assume that you have a variable declared as int var1 = 3; What is the value of 22/var1? a. 21 b. 7.333 c. 7 d. 1 c. 7 //program does not give decimals unless directed to. Note the int data type. What is the value of var2 in the following statement? int var1 = 3; var2 = ++ var1; 4 A variable that can hold two values, true and false, is what data type? bool What is the comparison operator for "not equal to"? != What is the value of the expression 6 >= 7; ? a. 0 b. 1 c. true d. false d. false Which of the following C# data types cannot contain floating-point numbers? a. float b. double c. decimal d. int d. int Assume you've declared a variable as double hourly = 13.00; what will the statement WriteLine(hourly) ; display? a. 13 b. 13.0 c. 13.00 d. 13. a. 13 //note that double gives exact value Assume that you have declared a variable as double salary = 45000.00; How do you WriteLine it so it will display $45,000? WriteLine(salary.ToString("c0")); //The 0 is used for 0 decimals. When you perform arithmetic operations with operands of different types, such as adding an int and a float: a. C# chooses a unifying type for the result b. you must choose a unifying type for the result c. you must provide a cast d. you receive an error message a. C# chooses a unifying type for the result 18. Unicode is_____________________. a. an object-oriented language b. a subset of the C# language c. a 16-bit coding scheme d. another term for hexadecimal c. a 16-bit coding scheme Which of the following declares a variable that can hold the word computer? a. string device = 'computer'; b. string device = "computer"; c. char device = 'computer'; d. char device = "computer"; b. string device = "computer"; Which of the following compares two string variables named string1 and string2 to determine if their contents are equal? a. string1 = string2 b. string1 == string2 c. Equals.String(string1, string2) d. two of the above b. string1 == string2