C Programming
© Copyright Brian Brown/Peter Henry, 1984-1999. All rights reserved.
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Sample Programming Problems

1.    Enter 2 numbers and print their sum.

2.    Enter 3 numbers and print their average.

3.    Enter the temperature in Centigrade, convert it to Fahrenheit and print it out.
       To convert to Fahrenheit, mulitply by 1.8 and add 32.
       E.g. 10C = 10*1.8+32 = 50F

4.    Enter your height in feet and inches and convert to metres, given 1 inch equals
       0.0254 metres. Print out your height in metres.

5.    Enter 2 numbers and print out the largest.

6.    Enter 3 numbers and print out the smallest.

7.    A salesman is paid a commission on the following basis

    Enter the sale value and print out the commission value (use a maximum entry value of $32000)

8.    Hutt Valley Energy charges its customers for electricity as follows.

    Enter the meter reading, calculate the cost and print out how much is charged.

9.    Print 8 asterisks (*) down the page.

        Output
        *
        *
        *
        *
        *
        *
        *
        *

10.    Enter a character and a number and print that number of copies of that character.

        Example Input
        Enter a character: F
        Enter a number: 4
        F
        F
        F
        F

11.    Enter a list of numbers, print the number and continue until the number is greater
        than 10.

Example Input
Enter a number: 5
The number is 5
Enter a number: 3
The number is 3
Enter a number: 7
The number is 7
Enter a number: 11

12.    Enter a list of numbers, print out that number of asterisks (*) on that line until
the number entered is 0.

Example Input
Enter a number: 5
*****
Enter a number: 1
*
Enter a number: 0

13.    Enter a number between 2 and 20 and print a filled square with sides of that number
of asterisks (*).

Example Input
Enter a number: 3
***
***
***

14.    Enter a number and print out its multiplication table from 1 to 10.

Example Input
Enter a number: 3
1 times 3 = 3
2 times 3 = 6
.
.
10 times 3 = 30

15.    Enter a list of 5 numbers and print their total.

16.    Enter a list of numbers terminated by a -1 and print their total.

17.    Enter a list of numbers terminated by a -1 and print how many numbers
where entered in.

18.    Enter a list of numbrs terminated by a -1 and print the smallest number
        (assume all numbers entered are positive).

19.    Enter a list of names terminated by a Z, and print out the alphabetically smallest.

20.    Enter a string of results for a History exam terminated by a -1. The pass mark
        is 50. Print the number of passes and the number of fails.

21.    Input the time started and finished at work in hours and minutes, then print out
        the time spent at work in hours and minutes.

Example Input
Enter start time: 8 30
Enter finish time: 11 15
2 hours 45 minutes

22.    Enter a persons weight in kilograms and height in metres. Calculate the persons
Quetelet Index (kilos / (metres*metres) ). Print out the Quetelet Index and an
appropriate message as indicated by the table below.

23.    Enter a list of numbers terminated by a -1 and print the difference between each pair
of numbers.

Example Input
Enter a number: 3
Enter a number: 5
Difference is 2
Enter a number: 6
Difference is 1
Enter a number: 10
Difference is 4
Enter a number: -1

24.    Enter 2 numbers and print them out. Then print the next 13 numbers in the sequence, where
the next number is the sum of the previous two.

Example Input
Enter the first number: 1
Enter the second number: 3
1 3 4 7 11 18 29 47 76 123 322 521 843 1364

25.    Enter your name and a number and print that number of copies of your name.

Example Input
Enter your name: Fred
Enter a number: 4
Fred
Fred
Fred
Fred

26.    Enter your name, convert to uppercase, reverse and print.

Example Input
Enter your name: Fred
DERF

27.    Input a sentence, count and print the number of spaces.

Example Input
Enter the sentence: A cat sat on the mat.
Number of spaces = 5

28.    Input a sentence and print one word per line. Assume one space between words
and the sentence is terminated with a period.

Example Input
Enter the sentence: A cat sat on the mat.
A
cat
sat
on
the
mat

29.    Input a sentence and print out if it is a palidrome

Example Input
Enter the sentence: Madam I'm Adam
It is a palidrome

Example Input
Enter the sentence: Fred
Not a palidrome

30.    Input ten numbers into an array, and print the numbers in reverse order.

Example Input
Enter the numbers: 5 4 6 7 22 19 12 15 2 1
1 2 15 12 19 22 7 6 4 5

31.    Input ten numbers into an array, and print these 3 times.

Example Input
Enter the numbers: 5 4 6 7 22 19 12 15 2 1
5 4 6 7 22 19 12 15 2 1
5 4 6 7 22 19 12 15 2 1
5 4 6 7 22 19 12 15 2 1

32.    Input ten numbers into an array, calculate and print the average, and print
out those values below the average.

Example Input
Enter the numbers: 5 4 6 7 22 19 12 15 2 1
Average = 9.3
Those numbers below the average 5 4 6 7 2 1

33.    Input ten numbers into an array, and print out the largest.

Example Input
Enter the numbers: 5 4 6 7 22 19 12 15 2 1
The largest number is 22

34.    Input ten numbers into an array, using values of 0 to 99, and print out
all numbers except for the largest number..

Example Input
Enter the numbers: 5 4 6 7 22 19 12 15 2 1
5 4 6 7 19 12 15 2 1

35.    Input ten numbers into an array, using values of 0 to 99, and print the
values in ascending order.

Example Input
Enter the numbers: 5 4 6 7 22 19 12 15 2 1
1 2 4 5 6 7 12 15 19 22

© Copyright Brian Brown/Peter Henry, 1984-1999. All rights reserved.