Objectives: Use the while loop in a program Use the do-while loop in a second pr
ID: 3873044 • Letter: O
Question
Objectives:
Use the while loop in a program
Use the do-while loop in a second program
Use the for loop in a third program
Instructions:
Part A. Code a for loop to print the Celsius temperatures for Fahrenheit temperatures 25 to 125. C = 5/9(F – 32).Output should be in a table format:
Fahrenheit Celsius
25 ?
. .
. . . .
. .
Turn in the source and the output from Part A.
Part B. Code a while loop to read in and total any number of positive integers terminated with a -1 as a sentinel. Print the average of the values after the loop is finished. Run with at least 4 or 5 numbers – make some of them negative numbers which should not be included in the total or average. The approach should be:
1. Define total and count and set them to 0
2. Read in a number
3. While number != -1
3.1 If number >0
3.1.1 Total += number
3.1.2 Count ++
3.2 Read in another number
4. Print the average of the positive numbers
5. Stop
Turn in the source and the output from Part B.
Part C. Code a do while loop to make change for a customer. Input the amount of money put into a vending machine. Change that value to cents. Input the amount of the purchase. Change that value to cents. Subtract the two values. Determine the customer’s change in number of quarters, dimes, nickels, and pennies, using integer arithmetic. Hint:
cents / 25 = number of quarters
cents % 25 = remaining cents to change into dimes, nickels, etc.
Keep making change for different purchases until the user tells you to stop. Make change for 3 or 4 purchases. Turn in the source and 3 or 4 outputs from Part C.
Run:
See each individual part for the run information.
Explanation / Answer
#include <stdio.h>
int main(void) {
// your code goes here
float fahrenheit,celsius;
printf("Celsius temperatures for Fahrenheit temperatures 25 to 125");
fahrenheit=25;
printf(" Fahrenheit Celsius");
while(fahrenheit<125)
{
celsius = (fahrenheit - 32) * 5 / 9;
printf(" %f %f",fahrenheit,celsius);
fahrenheit=fahrenheit+1;
}
return 0;
}
Output:
Celsius temperatures for Fahrenheit temperatures 25 to 125
Fahrenheit Celsius
25.000000 -3.888889
26.000000 -3.333333
27.000000 -2.777778
28.000000 -2.222222
29.000000 -1.666667
30.000000 -1.111111
31.000000 -0.555556
32.000000 0.000000
33.000000 0.555556
34.000000 1.111111
35.000000 1.666667
36.000000 2.222222
37.000000 2.777778
38.000000 3.333333
39.000000 3.888889
40.000000 4.444445
41.000000 5.000000
42.000000 5.555555
43.000000 6.111111
44.000000 6.666667
45.000000 7.222222
46.000000 7.777778
47.000000 8.333333
48.000000 8.888889
49.000000 9.444445
50.000000 10.000000
51.000000 10.555555
52.000000 11.111111
53.000000 11.666667
54.000000 12.222222
55.000000 12.777778
56.000000 13.333333
57.000000 13.888889
58.000000 14.444445
59.000000 15.000000
60.000000 15.555555
61.000000 16.111111
62.000000 16.666666
63.000000 17.222221
64.000000 17.777779
65.000000 18.333334
66.000000 18.888889
67.000000 19.444445
68.000000 20.000000
69.000000 20.555555
70.000000 21.111111
71.000000 21.666666
72.000000 22.222221
73.000000 22.777779
74.000000 23.333334
75.000000 23.888889
76.000000 24.444445
77.000000 25.000000
78.000000 25.555555
79.000000 26.111111
80.000000 26.666666
81.000000 27.222221
82.000000 27.777779
83.000000 28.333334
84.000000 28.888889
85.000000 29.444445
86.000000 30.000000
87.000000 30.555555
88.000000 31.111111
89.000000 31.666666
90.000000 32.222221
91.000000 32.777779
92.000000 33.333332
93.000000 33.888889
94.000000 34.444443
95.000000 35.000000
96.000000 35.555557
97.000000 36.111111
98.000000 36.666668
99.000000 37.222221
100.000000 37.777779
101.000000 38.333332
102.000000 38.888889
103.000000 39.444443
104.000000 40.000000
105.000000 40.555557
106.000000 41.111111
107.000000 41.666668
108.000000 42.222221
109.000000 42.777779
110.000000 43.333332
111.000000 43.888889
112.000000 44.444443
113.000000 45.000000
114.000000 45.555557
115.000000 46.111111
116.000000 46.666668
117.000000 47.222221
118.000000 47.777779
119.000000 48.333332
120.000000 48.888889
121.000000 49.444443
122.000000 50.000000
123.000000 50.555557
124.000000 51.111111
#include<stdio.h>
int main()
{
int total=0,count=0;
signed int n;
int avg;
do
{
printf(" Enter a number");
scanf("%d",&n);
if(n>0)
{
total=total+n;
count++;
}
}while(n!=-1);
avg=total/count;
printf(" Average:%d ",avg);
return 0;
}
Enter a number3
Enter a number6
Enter a number6
Enter a number-2
Enter a number3
Enter a number-1
Average:4
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