Question

1. Read Ch. 3. Using the C++ editor, type the following program:

#include <iostream>

#include <string>

using namespace std;

int main ()

{

       //declarations

string name;

       //input

cout <<"Enter your first name" << endl;

       cin >> name;

       //output

       cout << "Hello " << name << "! " << endl;

       return 0;

}

2. Compile and run. What does the cin statement do?
3. What does the cout statement do?
4. Is name a variable or a constant?
5. What type is name?
6. Add the following line to the declaration statements:

int age;

Add the following lines to your program:

cout << “Enter your age” << endl;

cin >> age;

Compile and Run.

What type is age? Describe this type.

7. Add a line to print the age to the screen. Compile and Run.
8. Add the following line to the declaration statements:

float bodyTemp;

              Add the lines to input and out your body temperature. Compile and run.

              What type is bodyTemp? Describe this type.

9. Add the appropriate declaration, input and output statement for each of the following:

Height (hint, use two variables)

Weight

Sex (hint, use the char type)

Last name

10. Turn in:
    1. The final program
    2. The final output

Answers to these questions only:

3. What is the integer data type and how is it declared in C++?
4. Give an example of where the integer type might be used.
5. What is the real data type and how is it declared in C++?
6. Give an example of where the real type might be used.
7. What is the string data type and how is a string declared in C++?
8. Give an example of where the string type might be used.
9. What is the boolean type and how is an boolean declared in C++?
10. Give an example of where the boolean type might be used.

Answer 1

Here is my detailed complete solution to your question. If you have any doubts regarding my answer please tell me in the comments. I would be very happy to help you.

CODE TO COPY:

#include <iostream>
#include <string>
using namespace std;

int main ()

{
//declarations
string name,last_name,g;
int age;
float bodyTemp,height,weight;
char gender;
  
//input
cout <<"Enter your first name" << endl;
cin >> name;
cout <<"Enter your Last name" << endl;
cin >> last_name;
cout << "Enter your age"<< endl;
cin >> age;
cout << "Please Enter your Body Temperature (in °F)"<< endl;
cin>> bodyTemp;
cout <<"Enter your Gender (Type M for Male or F for Female or O for Others )" << endl;
cin >> gender;
cout <<"Enter your Height (in centimeters)" << endl;
cin >> height;
cout <<"Enter your Weight (in Kgs)" << endl;
cin >> weight;
  
if (gender == 'M')
g = "Male";
else if (gender == 'F')
g = "Female";
else
g = "Others";

//output
cout << "Hello " << name <<" "<<last_name<< "! " << endl;
cout << "Your Age is : "<< age << endl;
cout << "Your Body Temperature is : "<<bodyTemp<<"°F"<< endl;
cout << "Your Gender is : "<< g <<endl;
cout << "Your Height is : "<< height <<" cm"<<endl;
cout << "Your Weight is : "<< weight <<" kg"<<endl;
  

return 0;

}

SCREENSHOT OF CODE:

SCREENSHOT OF OUTPUT 1:

SCREENSHOT OF OUTPUT 2:

cin statement is used to take input from the user through the keyboard.

cout statement is used to print out the output on the screen.

'name' is a variable of data-type string that stores a string of characters.

name is of string data-type.

age is of integer type(int) because age will always be an integer number. This data-type can store integer numbers without decimals.

body temperature is of the float data type. Float data-type can store floating-point numbers up to 2 decimals.

//Answers to these questions only:

int is the name of the data type for storing integers. It is declared as - int variable_name. For example, int age.

an integer data type can be used where you want to store a number.  

real data type or floating data type is used to store a numerical value with decimals. It is declared as float variable_name. For example, float temparature.

real data type is used to store height, weight, temperature.

string data type is used to store text written within single-quotes or double-quotes. It is declared as string variable_name. For example, string name.

string data type is used to store names, address etc.

boolean data type is used to check whether the condition is true or false as it stores only 2 values true or false. It is declared as bool b = True or bool a = 10