Question

In the Quiz class, the foo method has the following API : public static double foo( int i, string s, char c) how many arguments does foo take? is it 3 right?

What is the output of this code sequence?

int a = Math.min( 5, 8 );

System.out.println( a );

What is the output of this code sequence?

System.out.print( Math.round( 3.5 ) );

What is the output of this code sequence?

double d = Math.pow( 2, 3 );

System.out.println( d );

Answer 1

1. public static double foo(int i,String s,char c){}

Ans) Yes

Explanation:
There are 3 formal arguments.
First argument integer data type i
Second argument String object s and
Third argument character data type c

2 .What is the output of this code sequence?

int a=Math.min(5,8);
System.out.print(a);
Output: 5

Explanation: Math.min() returns the smaller of two integer values. Parameters are taken such as int, float, double and long data types. if a negative value and positive value is passed as argument then gives result positive. if both arguments are negative then the number with the higher magnitude is generated.

3. What is the output of this code sequence?

System.out.print(Math.round(3.5));

Output: 4

Explanation: Math.round() function returns the closest long to the argument. hence the result data type is long.

4. What is the output of this code sequence?

double d=Math.pow(2,3);
System.out.println(d);

Output: 8.0

Explanation: Math.pow() function calculate a number raise to the power of the some other number. This function returns double data type. This function accepts two parameters, first parameter is base and second parameter is power. Actually, this function static method on Math class, which means you don not have to instantiate a Math instance to call it.