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Self-check – Pg. 85 1) 22/7 = 3
7/22 = 0 22%7 = 1 7%22 = 0
b. 16/15 = 1 15/16 = 0 16%15 = 1 15%16 = 0

3 -a. 3%4= undefined – this is invalid because 3 divided by 4 in .75, which is zero.
b. (989 – 1000 = -11 / 3 = -3.6 – invalid, this is not an integer.
c. 4 %3 = 1 – Valid
d. 3.14 * -1 = -3.14 – valid
e. 3/-4 = -.75 – invalid, this is not an integer
f. ¾ = .75 – valid
g. 3 % .75 = 0 – valid

4= a. 7 % 3 = 1 b. (989 – 1000) / 7 = -1
c. 3%7 = -4
d. PI * 2.0 = 6.2
e. 7/-3= -2
f. 7/3 = 2
g. 7%(a7/3) = 1

Page 102

3. It’s missing the return (0)
4. Max_speed , Sphere size

2. if ((num V=I*R<0) Printf(“number = %lf”);

If (area=length*width) Printf(“number = %d”);

If (Rseries=R1+R2+R3) Printf(“number = %lf”);

If Rparallel = R1*R2 / (R1+R2) Printf(“number = %lf”);

3.
a. they considered this variable as a double, but I could pass as a integer. Also the printf statement has “%f” representing a double variable.
b. This makes more sense considering 15 * 0.5 equals a double variable: hence the “x” representing the double.
c. This program has 4 variables, the first two are double’s so they are labeled with “x,y”. the next two are int so they are labeled “I,j”. for each of the variable the printf statement show’s 2 “%f” and 2 “%d” confirming the variables type. At the end of printf, it shows the variables in order to keep track of them.
d. “printf(“%d”, A); is merely showing that the variable is a double.
e. since “j” is an integer, its number is shown with %d, but in order to equal B, there also needs to be a printf statement holding %f
f. The answers to each operation both equal to int, hence the “%d” given twice.

4. the first %d is representing the number of months
The second %d is representing the number 1
And the third %d is representing months-t

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