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3 years ago

What will be the value of ans after the following code has been executed?

Computers and Technology

2 answers:

Leno4ka [110]3 years ago

8 0

Answer:

B) 120

Explanation:

In the first three lines of the code, three variables ans, x and y have been declared and initialized;

=> ans = 10;

=> x = 65;

=> y = 55;

On the fourth line and fifth line of the code, there is an if block statement that will get executed if the value of x is greater than or equal to that of y;

i.e

if (x >= y)

ans = x + y;

And since x = 65 and y = 55, it implies that x is greater than or equal to y.

Therefore the fifth line of the code will be executed

=> ans = x + y

=> ans = 65 + 55

=> ans = 120

Note:

Though the value of variable ans was initially 10 before the execution of the if statement, its new value 120 will replace the former value.

Therefore the value of ans after the code has been executed is 120

Lesechka [4]3 years ago

7 0

Answer:

Option B 120

Explanation:

There are three variables, ans, x and y given in the code. In beginning, the variable. ans, holds value of 10. And variable x and y hold value of 65 and 55, respectively. Since the value held by x is bigger than one held by y, the if condition is met and the statement ans = x + y will run. The execution of this statement will total x with y -> 65 + 55 and the initial value of ans is overwritten by the addition result which is 120.

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Corrected (Modified) Question:

i. Assume that name is a variable of type String that has been assigned a value. Write an expression whose value is a String containing the last character of the value of name. So if the value of name were "Smith" the expression's value would be "h".

ii. Given a String variable named sentence that has been initialized, write an expression whose value is the number of characters in the String referred to by sentence.

Explanation of the corrected question

The whole question has been numbered (i) and (ii) just to separate or divide it into clearer sub questions.

Some parts of the question has also been removed since they are repetition of a part of the question.

Answer:

(i) name.charAt(name.length() - 1)

(ii) sentence.length()

Explanation:

No language has been specified in the question for the code to be written in. However, I have chosen to write it in Java.

(i) In Java, to get a particular character in a string str, the function, charAt(x) is used, where x in the function represents the index of the character to be fetched. This is written as str.charAt(x).

In our case, x is the index of the last character in our string. To get the index of the last character in a string say str, the length of the string itself is used. However, indexing starts at zero. Therefore, to get the index, it will be the 1 subtracted from the length of the string as follows:

str.length() - 1

But note that, to get the length of a string, the method length() is used. For example if,

String str = "omobowale";

str.length() will return 9

Now to the question at hand, our string variable name is name.

Therefore to get its last character, we write:

name.charAt(name.length() - 1)

So if;

name = "Smith";

name.charAt(name.length() - 1) will return "h"

(ii) As explained in (i) above, to get the length (number of characters) of the variable string sentence, we simply write;

sentence.length()

PS: The length of a string is the number of characters present in the string.

Hope this helps!

3 0

3 years ago