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Shop What's New Sign inSolution Manual for Engineering Problem Solving With C++, 4th Edition
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Exam Practice!
1. T
2. F
3. T
4. T
5. F
6. Not Correct. int i, j, k;
7. Correct.
8. Incorrect. double D1, D2, D3;
9. Correct.
10. Correct.
11. (d)
12. (b)
13. (a)
14. (c)
15. (e)
Memory Snapshots
16. x1=>2, z=>2, x=>2
17. x=>2, y=>1, a=>3.8, n=>2
Output
18. value_1 = 5.78263
19. Missing ; (value_4 = 6.645832e+01)
20. value_5 = 7750
Programming Exercises
/*——————————————————————–*/
/* Problem chapter2_21
*/
/*
*/
/* This program converts miles to kilometers.
*/
#include
using namespace std;
int main()
{
/* Declare variables. */
double miles, kilometers;
/* Enter number of miles from the keyboard.
cout <> miles;
*/
/* Compute the number of kilometers equal to the specified miles. */
kilometers = 1.6093440*miles;
/* Print the number of kilometers. */
cout << miles << " miles = " << kilometers << " kilometers n";
/* Exit program.
return 0;
*/
}
/*——————————————————————–*/
/*——————————————————————–*/
/* Problem chapter2_22
*/
/*
*/
/* This program converts meters to miles.
*/
ยฉ2017 Pearson Education, Inc. Hoboken, NJ. All Rights Reserved.
#include
using namespace std;
int main()
{
/* Declare variables.
double miles, meters;
*/
/* Enter number of meters from the keyboard.
cout <> meters;
*/
/* Compute the number of miles equal to the specified meters. */
miles = meters/1609.3440;
/* Print the number of miles. */
cout << meters << " meters = "<< miles << " miles n";
/* Exit program.
return 0;
*/
}
/*——————————————————————–*/
/*——————————————————————–*/
/* Problem chapter2_23
*/
/*
*/
/* This program converts pounds to kilograms.
*/
#include
using namespace std;
int main()
{
/* Declare variables. */
double pounds, kilograms;
/* Enter number of pounds from the keyboard.
cout <> pounds;
*/
/* Compute number of kilograms equal to the specified pounds.
kilograms = pounds/2.205;
*/
/* Print the number of kilograms. */
cout << pounds << " pounds = " << kilograms << " kilograms n";
/* Exit program.
return 0;
*/
}
/*——————————————————————–*/
/*——————————————————————–*/
/* Problem chapter2_24
*/
/*
*/
/* This program converts newtons to pounds.
*/
#include
ยฉ2017 Pearson Education, Inc. Hoboken, NJ. All Rights Reserved.
using namespace std;
int main()
{
/* Declare variables. */
double pounds, newtons;
/* Enter number of newtons from the keyboard.
cout <> newtons;
*/
/* Compute number of pounds equal to the specified newtons.
pounds = newtons/4.448;
*/
/* Print the number of pounds. */
cout << newtons << " newtons = " << pounds << " pounds n";
/* Exit program.
return 0;
*/
}
/*——————————————————————–*/
/*——————————————————————–*/
/* Problem chapter2_25
*/
/*
*/
/* This program converts degrees Fahrenheit to degrees Rankin.
*/
#include
using namespace std;
int main()
{
/* Declare variables. */
double degrees_F, degrees_R;
/* Enter temperture in degrees Fahrenheit from the keyboard.
cout <> degrees_F;
/* Compute the equivalent temperature in degrees Rankin
/* from the given temperature.
degrees_R = degrees_F + 459.67;
*/
*/
*/
/* Print the temperatures. */
cout << degrees_F << " degrees Fahrenheit = " << degrees_R << " degrees
Rankin n";
/* Exit program.
return 0;
*/
}
/*——————————————————————–*/
/*——————————————————————–*/
/* Problem chapter2_26
*/
/*
*/
/* This program converts degrees Celsius to degrees Rankin.
*/
#include
ยฉ2017 Pearson Education, Inc. Hoboken, NJ. All Rights Reserved.
using namespace std;
int main()
{
/* Declare variables. */
double degrees_C, degrees_F, degrees_R;
/* Enter temperture in degrees Celsius from the keyboard.
cout <> degrees_C;
/* Compute the equivalent temperature in degrees Rankin
/* from the given temperature.
degrees_F = (9.0/5.0)*degrees_C + 32;
degrees_R = degrees_F + 459.67;
*/
*/
*/
/* Print the temperatures. */
cout << degrees_C << " degrees Celsius = " << degrees_R << " degrees
Rankin n";
/* Exit program.
return 0;
*/
}
/*——————————————————————–*/
/*——————————————————————–*/
/* Problem chapter2_27
*/
/*
*/
/* This program converts degrees Kelvin to degrees Fahrenheit.
*/
#include
using namespace std;
int main()
{
/* Declare variables. */
double degrees_R, degrees_K, degrees_F;
/* Enter temperture in degrees Kelvin from the keyboard.
cout <> degrees_K;
*/
/* Compute the equivalent temperature in degrees Fahrenheit
/* from the given temperature.
degrees_R = (9.0/5.0)*degrees_K;
degrees_F = degrees_R – 459.67;
*/
*/
/* Print the temperatures. */
cout << degrees_K << " degrees Kelvin = " << degrees_F << " degrees
Fahrenheit n";
/* Exit program.
return 0;
*/
}
/*——————————————————————–*/
/*——————————————————————–*/
ยฉ2017 Pearson Education, Inc. Hoboken, NJ. All Rights Reserved.
/*
/*
/*
Problem chapter2_28
*/
*/
*/
This program finds the area of a rectangle.
#include
using namespace std;
int main()
{
/* Declare variables.
double a, b, area;
*/
/* Enter the lengths of sides of the rectangle. */
cout <> a >> b;
/* Compute the area of the rectangle.
area = a*b;
“;
*/
/* Print the value of the area. */
cout << "The area of a rectangle with sides " << a << " and " << b
<< " is " << area << endl;
/* Exit program.
return 0;
*/
}
/*——————————————————————–*/
/*——————————————————————–*/
/* Problem chapter2_29
*/
/*
*/
/* This program finds the area of a triangle.
*/
#include
using namespace std;
int main()
{
/* Declare variables.
double h, b, area;
*/
/* Enter the base and the height of the triangle. */
cout <> b >> h;
/* Compute the area of the triangle.
area = 0.5*b*h;
*/
/* Print the value of the area. */
cout << "The area of a triangle with base " << b << " and height " << h
<< "is " << area << endl;
/* Exit program.
return 0;
*/
}
/*——————————————————————–*/
ยฉ2017 Pearson Education, Inc. Hoboken, NJ. All Rights Reserved.
/*——————————————————————–*/
/* Problem chapter2_30
*/
/*
*/
/* This program finds the area of a circle.
*/
#include
using namespace std;
const double PI = 3.141593;
int main()
{
/* Declare variables.
double r, area;
*/
/* Enter the radius. */
cout <> r;
/* Compute the area of the circle.
area = PI*r*r;
*/
/* Print the value of the area. */
cout << "The area of a circle with radius " << r << " is "
<< area << endl;
/* Exit program.
return 0;
*/
}
/*——————————————————————–*/
/*——————————————————————–*/
/* Problem chapter2_31
*/
/*
*/
/* This program computes the area of a sector of a circle when
*/
/* theta (u) is the angle in radians between the radii.
*/
#include
using namespace std;
int main()
{
/* Declare variables.
double u, r, area;
*/
/* Enter the lengths of the radii and */
/* the angle between them.
*/
cout << "Enter the length of the radii and the angle "
<> r >> u;
/* Compute the area of the sector.
area = (r*r*u)/2.0;
*/
/* Print the value of the area. */
cout << "The area of sector is " << area << endl;
ยฉ2017 Pearson Education, Inc. Hoboken, NJ. All Rights Reserved.
/* Exit program.
return 0;
*/
}
/*——————————————————————–*/
/*——————————————————————–*/
/* Problem chapter2_32
*/
/*
*/
/* This program computes the area of a sector of a circle when
*/
/* the input (d) is the angle in degrees between the radii.
*/
#include
using namespace std;
const double PI = 3.141593;
int main()
{
/* Declare variables. */
double d, r, area, theta;
/* Enter the lengths of the radii and */
/* the angle between them.
*/
cout << "Enter the length of the radii and the angle "
<> r >> d;
/* Compute the value of the angle in radians.
theta = d * PI / 180;
/* Compute the area of the sector.
area = (r*r*theta)/2.0;
*/
*/
/* Print the value of the area. */
cout << "The area of sector is " << area << endl;
/* Exit program.
return 0;
*/
}
/*——————————————————————–*/
/*——————————————————————–*/
/* Problem chapter2_33
*/
/*
*/
/* This program computes the area of an
*/
/* ellipse with semiaxes a and b.
*/
#include
using namespace std;
const double PI = 3.141593;
int main()
{
/* Declare variables.
*/
ยฉ2017 Pearson Education, Inc. Hoboken, NJ. All Rights Reserved.
double a, b, area;
/* Enter the length of the semiaxes. */
cout <> a >> b;
/* Compute the area of the ellipse.
area = PI*a*b;
*/
/* Print the value of the area. */
cout << "The area of an ellipse with semiaxes " << a << " and "
<< b << " is " << area << endl;
/* Exit program.
return 0;
*/
}
/*——————————————————————–*/
/*——————————————————————–*/
/* Problem chapter2_34
*/
/*
*/
/* This program computes the area of the surface
*/
/* of a sphere of radius r.
*/
#include
using namespace std;
const double PI = 3.141593;
int main()
{
/* Declare variables.
double r, area;
*/
/* Enter the radius of the sphere. */
cout <> r;
/* Compute the area of the sphere.
area = 4.0*PI*r*r;
*/
/* Print the value of the area. */
cout << "The area of a sphere with radius " << r
<< " is " << area << endl;
/* Exit program.
return 0;
*/
}
/*——————————————————————–*/
/*——————————————————————–*/
/* Problem chapter2_35
*/
/*
*/
/* This program computes the volume
*/
/* of a sphere of radius r.
*/
#include
ยฉ2017 Pearson Education, Inc. Hoboken, NJ. All Rights Reserved.
#include
using namespace std;
const double PI = 3.141593;
int main()
{
/* Declare variables.
double r, volume;
*/
/* Enter the radius of the sphere. */
cout <> r;
/* Compute the volume of the sphere.
volume = (4.0/3)*PI*pow(r,3);
*/
/* Print the value of the volume. */
cout << "The volume of a sphere with radius " << r
<< " is " << volume << endl;
/* Exit program.
return 0;
*/
}
/*——————————————————————–*/
/*——————————————————————–*/
/* Problem chapter2_36
*/
/*
*/
/* This program computes the volume of a cylinder
*/
/* of radius r and height h.
*/
#include
using namespace std;
const double PI = 3.141593;
int main()
{
/* Declare variables.
double r, h, volume;
*/
/* Enter the radius and height of the cylinder. */
cout <> r >> h;
/* Compute the volume of the cylinder.
volume = PI*r*r*h;
*/
/* Print the volume. */
cout << "The volume of a cylinder of radius " << r << " and "
<< "height " << h << " is " << volume << endl;
/* Exit program.
return 0;
*/
}
/*——————————————————————–*/
ยฉ2017 Pearson Education, Inc. Hoboken, NJ. All Rights Reserved.
/*——————————————————————–*/
/* Problem chapter2_37
*/
/*
*/
/* This program computes the molecular weight of the
*/
/* amino acid glycine.
*/
#include
using namespace std;
/* Defines symbolic constants for the appropriate atomic weights.
const double OXYGEN = 15.9994;
const double CARBON = 12.011;
const double NITROGEN = 14.00674;
const double HYDROGEN = 1.00794;
*/
int main()
{
/* Declare variables. */
double molecular_weight;
/* Compute the molecular weight of glycine.
molecular_weight = (2*OXYGEN) + (2*CARBON) +
NITROGEN + (5*HYDROGEN);
*/
/* Print the molecular weight. */
cout << "The molecular weight of glycine is " << molecular_weight << endl;
/* Exit program.
return 0;
*/
}
/*——————————————————————–*/
/*——————————————————————–*/
/* Problem chapter2_38
*/
/*
*/
/* This program computes the molecular weights of the
*/
/* amino acids glutamic and glutamine.
*/
#include
using namespace std;
/* Defines symbolic constants for the appropriate atomic weights.
const double OXYGEN = 15.9994;
const double CARBON = 12.011;
const double NITROGEN = 14.00674;
const double HYDROGEN = 1.00794;
int main()
{
/* Declare variables. */
double mol_weight_glutamic, mol_weight_glutamine;
/* Compute the molecular weights. */
mol_weight_glutamic = (4*OXYGEN) + (5*CARBON) +
ยฉ2017 Pearson Education, Inc. Hoboken, NJ. All Rights Reserved.
*/
NITROGEN + (8*HYDROGEN);
mol_weight_glutamine = (3*OXYGEN) + (5*CARBON) +
(2*NITROGEN) + (10*HYDROGEN);
/* Print the molecular weights. */
cout << "The molecular weight of glutamic is " << mol_weight_glutamic
<< endl;
cout << "The molecular weight of glutamine is " << mol_weight_glutamine
<< endl;
/* Exit program.
return 0;
*/
}
/*——————————————————————–*/
/*——————————————————————–*/
/* Problem chapter2_39
*/
/*
*/
/* This program computes the molecular weight of a particular
*/
/* amino acid given the number of atoms for each of the five
*/
/* elements found in the amino acid.
*/
#include
using namespace std;
/* Defines symbolic constants for the appropriate atomic weights.
const double OXYGEN = 15.9994;
const double CARBON = 12.011;
const double NITROGEN = 14.00674;
const double HYDROGEN = 1.00794;
const double SULFUR = 32.066;
*/
int main()
{
/* Declare variable. */
int no_oxy, no_carbon, no_nitro, no_hydro, no_sulfur;
double molecular_weight;
/* Enter the number of atoms for each of the five elements.
cout <> no_oxy;
cout <> no_carbon;
cout <> no_nitro;
cout <> no_sulfur;
cout <> no_hydro;
*/
/* Compute the molecular weight. */
molecular_weight = (no_oxy*OXYGEN) + (no_carbon*CARBON) +
(no_nitro*NITROGEN) + (no_sulfur*SULFUR) +
(no_hydro*HYDROGEN);
ยฉ2017 Pearson Education, Inc. Hoboken, NJ. All Rights Reserved.
/* Print the molecular weight. */
cout << "The molecular weight of this particular amino acid is "
<< molecular_weight << endl;
/* Exit program.
return 0;
*/
}
/*——————————————————————–*/
/*——————————————————————–*/
/* Problem chapter2_40
*/
/*
*/
/* This program computes the average atomic weight of the atoms
*/
/* found in a particular amino acid given the number of atoms for
*/
/* each of the five elements found in amino acid.
*/
#include
using namespace std;
/* Defines symbolic constants for the appropriate atomic weights.
const double OXYGEN = 15.9994;
const double CARBON = 12.011;
const double NITROGEN = 14.00674;
const double HYDROGEN = 1.00794;
const double SULFUR = 32.066;
*/
int main()
{
/* Declare variables. */
int no_oxy, no_carbon, no_nitro, no_hydro, no_sulfur, total_no;
double average_atomic_weight;
/* Enter the number of atoms for each of the five elements.
cout << "Enter the number of oxygen atoms found "
<> no_oxy;
cout <> no_carbon;
cout <> no_nitro;
cout <> no_sulfur;
cout <> no_hydro;
*/
/* Compute the average weight of the atoms. */
total_no = no_oxy + no_carbon + no_nitro + no_sulfur + no_hydro;
average_atomic_weight = ((no_oxy*OXYGEN) + (no_carbon*CARBON) +
(no_nitro*NITROGEN) + (no_sulfur*SULFUR) +
(no_hydro*HYDROGEN))/total_no;
/* Print the average atomic weight. */
cout << "The average weight of the atoms in this particular amino "
<< "acid is " << average_atomic_weight << endl;
/* Exit program.
return 0;
*/
ยฉ2017 Pearson Education, Inc. Hoboken, NJ. All Rights Reserved.
}
/*——————————————————————–*/
/*——————————————————————–*/
/* Problem chapter2_41
*/
/*
*/
/* This program reads in a positive number and then computes
*/
/* the logarithm of that value to the base 2.
*/
#include
#include
using namespace std;
int main()
{
/* Declare variables.
double x, answer;
*/
/* Enter a positive number. */
cout <> x;
“;
/* Compute the logarithm to base 2.
answer = log(x)/log(2.0);
*/
/* Print the answer. */
cout << "The logarithm of " << x << " to the base 2 is " << answer
<< endl;
/* Exit program.
return 0;
*/
}
/*——————————————————————–*/
/*——————————————————————–*/
/* Problem chapter2_42
*/
/*
*/
/* This program reads in a positive number and then computes
*/
/* the logarithm of that value to the base 8.
*/
#include
#include
using namespace std;
int main()
{
/* Declare variables.
double x, answer;
*/
/* Enter a positive number. */
cout <> x;
“;
/* Compute the logarithm to base 8.
answer = log(x)/log(8.0);
*/
ยฉ2017 Pearson Education, Inc. Hoboken, NJ. All Rights Reserved.
/* Print the answer. */
cout << "The logarithm of " << x << " to the base 8 is " << answer
<< endl;
/* Exit program.
return 0;
*/
}
/*——————————————————————–*/
ยฉ2017 Pearson Education, Inc. Hoboken, NJ. All Rights Reserved.
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