PASS Week 9/29 Solutions

/*** SOLUTIONS ***/



/** PROBLEM 1A **/

#include <stdio.h>
#include <math.h>

int main(void)
{
    //Local Declarations
    double base = 0.0;
    double area = 0.0;

    //Local Statements

    //prompt user
    printf("Enter in a value for the base of a square.\n");

    //get input
    scanf("%lf", &base);

    //process data
    area = pow(base, 2);

    //output information
    printf("The area of a square is %8.2lf\n", area);

    return 0;

}//end main





/** PROBLEM 1B **/

#include <stdio.h>
#include <math.h>

double ComputeAreaOfSquare(double);

int main(void)
{
    //Local Declarations
    double base = 0.0;
    double area = 0.0;

    //Local Statements

    //prompt user
    printf("Enter in a value for the base of a square.\n");

    //get input
    scanf("%lf", &base);

    //process data by calling your function
    area = ComputeAreaOfSquare(base);

    //output information
    printf("The area of a square is %8.2lf\n", area);

    return 0;

}//end main

//You would write function descriptions here
double ComputeAreaOfSquare(double baseIn)
{
    double area = pow(baseIn,2);
    return area;
}//end function





/** PROBLEM 1C **/

#include <stdio.h>
#include <math.h>

void PrintInstructions(void);
double GetInput(void);
double ComputeAreaOfSquare(double);
void PrintOutput(double);

int main(void)
{
    //Local Declarations
    double base = 0.0;
    double area = 0.0;

    //Local Statements
    PrintInstructions();
    base = GetInput();
    area = ComputeAreaOfSquare(base);
    PrintOutput(area);

    return 0;

}//end main

//You would write function descriptions here
void PrintInstructions()
{
    printf("Enter in a value for the base of a square.\n");
    return;
}//end function

//You would write function descriptions here
double GetInput()
{
    double baseIn = 0.0;
    scanf("%lf", &baseIn);
    return baseIn;
}//end function

//You would write function descriptions here
double ComputeAreaOfSquare(double baseIn)
{
    double area = pow(baseIn, 2);
    return area;
}//end function

void PrintOutput(double areaIn)
{
    printf("The area of a square is %8.2lf\n",areaIn);
    return;
}//end function









/** PROBLEM 2 **/

#include <stdio.h>
#include <math.h>

double CalcHypotenuse(double, double);
double CalcArea(double, double);
double CalcPerimeter(double, double, double);

int main(void)
{
    //Local Decalarations
    double sideA = 0.0;
    double sideB = 0.0;
    double area = 0.0;
    double perimeter = 0.0;

    //Local Statements
    printf("Enter in values for side A and side B of a right triangle: ");
    scanf("%lf %lf", &sideA, &sideB);

    area = CalcArea(sideA, sideB);

    perimeter = CalcPerimeter(sideA, sideB, CalcHypotenuse(sideA, sideB));

    printf("The Area is: %10.2lf and the perimeter is: %10.2lf\n", area, perimeter);

    return 0;

}//end main

double CalcHypotenuse(double sideA, double sideB)
{
    double hypot = 0.0;
    hypot = sqrt( (pow(sideA,2) + pow(sideB,2)) );
    return hypot;
}

double CalcArea(double sideA, double sideB)
{
    double area = 0.0;
    area = .5 * (sideA * sideB);
    return area;
}

double CalcPerimeter(double sideA, double sideB, double sideC)
{
    double perimeter = sideA + sideB + sideC;
    return perimeter;
}









/** PROBLEM 3 **/

/***********************************************
* This program demonstrates seeding the random
* number function.
* By: Larry Snedden
* *********************************************/

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

int main(void)
{
    //srand(time(NULL));
    printf("%d\n", rand());
    printf("%d\n", rand());
    printf("%d\n", rand());
    printf("%d\n", rand());
    printf("%d\n", rand());
    printf("%d\n", rand());
    printf("%d\n", rand());
    printf("%d\n", rand());
    printf("%d\n", rand());
    printf("%d\n", rand());

    return 0;

}//end main




/** PROBLEM 4 **/

/****************************************
 * This program is used to demonstrate *
* The random number functions in *
* stdlib.h *
* By: L. Snedden *
* *************************************/

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

int main(void)
{
    srand(time(NULL));//This makes the set random

    //produce numbers ranging from 10 to 20
    //rand() % ((max - min) +1) + 10; //set the range and then shift to the right
    printf(" %d\n", rand() % 11 + 10);
    printf(" %d\n", rand() % 11 + 10);
    printf(" %d\n", rand() % 11 + 10);

    return 0;

}//end main