PASS Week 3/10

Problem #1

Write a program that simulates flipping a coin for 1000 times and report the
number of heads and tails you get. Use a for loop to control the random number
generation and two variables to store the heads vs tails counts. NOTE: use the
random number generator.




/*** SKELETON CODE ***/

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main(void)
{
	srand(time(NULL));


	/** LOCAL DECLARATIONS GO HERE (Need variables for heads and tails) ***/


	for(/* Put loop info here */){


	}


	//Print number of heads (Outside loop)
	//Print number of tails (Outside loop)

	return 0;
}//end main























Problem #2

https://www.mathsisfun.com/numbers/factorial.html

Write a program that will determine the factorial of a user supplied number using a
for loop.



/*** SKELETON CODE ***/

/*
* Compose a program using a for loop that will determine the
* factorial of a user supplied number.
* BY: Larry Snedden
*/

#include <stdio.h>

int main(void)
{
	/** LOCAL DECLARATIONS GO HERE **/

	//Local statements
	printf("Enter in a number for factorial: ");
	//SCANF STATEMENT GOES HERE

	for(/* Put loop info here */){


	}

	/** OUTPUT FACTORIAL RESULT HERE (Outside of Loop) **/

	return 0;
}//end main


















Problem #3

Write a program that prints numbers in descending order. Using a while loop,
prompt the user for the amount of numbers (integers) to print to screen up to 100.
Print the numbers counting down from the number entered all the way down to the
number 0, like a countdown. Every 10 numbers printed to screen, print a newline so
that there is a maximum of 10 numbers per line. Your while loop should use a test
condition to determine when to stop.


Example Output:

Enter an integer between 1 and 100: 100
 100  99  98  97  96  95  94  93  92  91
  90  89  88  87  86  85  84  83  82  81
  80  79  78  77  76  75  74  73  72  71
  70  69  68  67  66  65  64  63  62  61
  60  59  58  57  56  55  54  53  52  51
  50  49  48  47  46  45  44  43  42  41
  40  39  38  37  36  35  34  33  32  31
  30  29  28  27  26  25  24  23  22  21
  20  19  18  17  16  15  14  13  12  11
  10   9   8   7   6   5   4   3   2   1



/** SKELETON CODE **/

/* Simple while loop that prints numbers 10 per line.
 Written by:
 Date:
*/
#include <stdio.h>
int main (void)
{
	// Local Declarations
	int num;
	int lineCount = 0;

	// Statements
	printf ("Enter an integer between 1 and 100: ");
	scanf ("%d", &num); // Initialization

	// Test number value here to make sure it is valid (Use if-else to test if it is between 1 and 100)

	/** WHILE LOOP GOES HERE **/

	return 0;
} // main



















Problem #4

Write a program using a do while loop that reads positive integers from the user.
The user should be prompted to enter positive integer values or a 0 to quit. Data is
entered one integer at a time. Zero is used to signify the end of a user’s input. The
program will print the minimum, maximum and average integer of user’s input.
Also, recall that division on integer values may not work well if you have a fractional
average. How might you use casting here? Remember that the zero is not a member
of the list, don’t use it to determine the average. Test your program with the
following data:

24, 7, 31, 64, 57, 7, 63, 31, 15, 7, 2, 4, and 6.

Your min should be 2, max should be 64 and average should be 24.46 with this test
data.



/** SKELETON CODE **/

/*
* This program demonstrates how to use a do while loop with a
* quit condition predicated on user input.
* Also demonstrated is the casting operator and if selection.
* By: L Snedden
*/
#include <stdio.h>

int main(void)
{
	// Local declarations
	int min = 1; 		// Min value
	int max = 1; 		// Max value
	int numIn = 0;  	// Input number
	int ttlCnt = 0; 	// Total number of inputs
	int ttlIn = 0; 		// Total sum of numbers
	double avg = 0.0; 	// Average

	/** DO WHILE LOOP GOES HERE **/

	avg = (double)ttlIn / (double)ttlCnt;		// Calculate Average
	printf("Min: %d Max: %d Avg: %.2lf\n", min, max, avg);	// Print output

	return 0;
}//end main