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Temka [501]
3 years ago
15

Given that the variables x and y have already been declared and assigned values, write an expression that evaluates to true if x

is non-negative and y is negative.
Computers and Technology
1 answer:
Eduardwww [97]3 years ago
3 0

Answer:

The expression to this question can be defined as follows:

Expression:

(x >= 0 && y<0) //check condition using AND operator

Explanation:

In the given question it is defined that x and y are an integer variable that holds some value, in which it defines a condition that checks the value of variable x is positive, and the value of y is negative.

  • To check positive value a condition is used, that checks x greater than equal to 0, and to check negative value, it uses condition, that is y is less than 0.
  • In the above condition, the AND operator is used, which executes when both conditions are true.
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A large network of networks

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Levi wants to run 5 commands sequentially, but does not want to create a shell script. He knows that each command is going to ta
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um

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what subject is this again?

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12. Write C statement(s) that accomplish the following. a. Declare int variables x and y. Initialize x to 25 and y to 18. b. Dec
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Answer:

a.

int x = 25;

int y = 18;

b.

int temp = 10;

char ch ='a';

c.

x += 5;

d.

double payRate = 12.5;

e.

int tempNum = firstNum;

f.

int tempp = x;

x = y;

y = tempp;

g.

printf("Value of x = %f\n",x);

printf("Value of y = %f\n",y);

printf("Arithmetic = %f\n",(x + 12/y -18));

h.

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i.

int a,b,c,d;

a = 5; b = 2; c = 3; d = 6;

j.

int x = round(z);

Explanation:

The answers are straight forward.

However, I'll give a general hint in answering questions like this.

In C, variable declaration is done by:

data-type variable-name;

To declare and initialise the variable, you do;

data-type variable-name = value;

So, for questions that requires that we declare and initialise a variable, we make use of the above syntax..

Take (a) for instance:

int x = 25;

int y = 18;

Same syntax can be applied to (b), (d), (e), (h) & (I)

For question (c);

This can be done in two ways;

x = x + 5;

Or

x+=5;

Both will give the same result.

For question (f):

We start by initialise a temporary variable that stores x.

Then we store the value of x in y.

Then we store the content of the temporary variable to y.

This swaps the values of x and y

For question (g):

When printing a double variable in C, we make use of '\f' as a string format

For question (j):

The round function is used to round up a double variable to integer.

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