TRUE FALSE No 14 15 Question Variables are not initialized automatically. A literal is a named constant used to specify data. A conversion specification consists of a percent sign (%), a conversion code, and up to four optional modifiers. The formatted scan function requires variable addresses in the parameter list. 16 17 18 a++ is a postfix expression If a variable, num, contains the value 5, the value of the expression --num 19 25 20 The unary plus/minus operators have no side effect. 21 The value of the modulus binary expression is a remainder. 22 The expression x = - dis a compound assignment. 23 The value of the expression 2 + 3 + 4 is 20. 24 Associativity is used to determine the order in which operators with the same precedence are evaluated. In C, if a single variable is modified more than once in an expression, the result is undefined When the type of two operands in a binary expression are different, C 26 automatically converts one type to another using the concept of conversion rank 27 If an integer (int) and a real (float) are multiplied, the result is an integer. 28 Explicit type conversion uses the unary cast operator. 29 A compound statement is a unit of code consisting of zero or more statements. 30 A function cannot have a side effect and retwn a value. 31 AC function must either have parameters or return a value. 32 A function call is a postfix expression. 33 Functions cannot be coded in a parameter list. 34 A function can be called multiple times within a block of code. 35 Inter-function communication can be downward, upward, or bi- directional When only one value needs to be passed back to the calling function, the 36 preferred technique is to use a non-void function. 37 The following code exchanges the values in variables: x = y; y = x; 38 The power functions receive an integral number and return an integral number. 39 C provides two functions to build a random number series. Because the random number function returns an integer, it is not possible 40 to generate random numbers of a real type