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.
char grade = 'A';
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.
