CS1101C Lab 2 (Even Week)

Square Numbers

The deadline for this lab question is Friday 09 March 2007, 23:59:59 hours.

The name of your C program file must be called square1.c, files with any other name will not be marked.

Preliminary

Every square number can be written as the form:

n * n

for some natural number n. The sequence of square numbers for n = 1, 2, 3... is:

1, 4, 9, 16, 25, 36, 49, 64, 81, 100, ...

Your Task

Write a program called square1.c that prompts the user to input an integer x. If x is a square number, display it. If x is not a square number, display the nearest square number below x and the nearest square number above x.

Keep prompting the user to enter an integer until the user chooses to quit the program by entering a value of 0. When the user quits the program, display the number of integers entered, as well as the number of square and non-square numbers.

Sample Runs

Assuming that the executable is square1, a sample run of the program is shown below, which you must follow precisely. User input is denoted in bold.

$ gcc -Wall square1.c -o square1
$ ./square1
Enter an integer (1 - 2000000000, 0 to quit): 1
1 is a square number.

Enter an integer (1 - 2000000000, 0 to quit): 2
2 is between square numbers 1 and 4.

Enter an integer (1 - 2000000000, 0 to quit): 97
97 is between square numbers 81 and 100.

Enter an integer (1 - 2000000000, 0 to quit): 49
49 is a square number.

Enter an integer (1 - 2000000000, 0 to quit): 50
50 is between square numbers 49 and 64.

Enter an integer (1 - 2000000000, 0 to quit): 1999967841
1999967841 is a square number.

Enter an integer (1 - 2000000000, 0 to quit): 2000000000
2000000000 is between square numbers 1999967841 and 2000057284.

Enter an integer (1 - 2000000000, 0 to quit): 0
Number of integers entered: 7
Square numbers: 3
Non-square numbers: 4
Thank you for using my program. Goodbye!

$

Points to Note

Remember to include the program header in your C program file.
For simplicity, we assume that user input will always be within the range of permissible values, so there is no need to perform any explicit checks on the data entered by the user. You may assume that the number entered is always an integer between 0 to 2,000,000,000 inclusive.
Do not use any other data types except int. That means you are not allowed to use double, float, char, etc. or any unsigned types. You are only allowed to use the int data type and nothing else.
Do not use any break, continue, or goto statements.
Do not use any functions from the math library.
Do not use any arrays or pointers.

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