Problem Solving with C++ (9th Edition)
9th Edition
ISBN: 9780133591743
Author: Walter Savitch
Publisher: PEARSON
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Textbook Question
Chapter 6.2, Problem 21STE
(This exercise is for those who have studied the optional section entitled “File Names as Input.”) Suppose you are given the following string variable declaration and input Statement:
#include <iostream>
using namespace std;
// ... char name[21];
cout >> name;
Suppose this code segment is embedded in a correct
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Exercise #2 Frequency Analysis:
One of the oldest approaches to breaking a code is to perform a frequency count of letters.
Write a C++ program to perform a frequency count by reading the text from a file (code.txt). Your
program should output how many A's are there in the text, how many B's are there,
and so on. Note that the program will not make any distinction between uppercase
and lowercase letters. It will output the results to the screen and in a text file (count.txt)
Sample output (for code.txt):
A: 3
B: 3
C: 23
D: 13
E: 41
F: 4
G: 9
H: 15
1:44
J: 1
K: 0
L: 7
M: 9
N: 33
O: 16
P: 4
Q:0
R: 22
S: 24
T: 27
U: 8
V: 5
W: 1
X: 0
Y: 4
Z: 0
Discussion: Files with .h extension are called header files in C. These header files generally contain function declarations which we can be used in main C program, like for e.g. to include stdio.h in C program to use function printf()
Exercise 2. Creating myhead.h : Write the below code and then save the file as myhead.h or you can give any name but the extension should be .h indicating it’s a header file.
// It is not recommended to put function definitions
// in a header file. Ideally there should be only
// function declarations. Purpose of this code is
// to only demonstrate working of header files.
void add(int a, int b)
{
printf("Added value=%d\n", a + b);
}
void multiply(int a, int b)
{
printf("Multiplied value=%d\n", a * b);
}
Including the .h file in other program : Now as we need to include stdio.h as #include in order to use printf() function. We will also need to include the above header file myhead.h as #include”myhead.h”. The ” ” here are used to instruct…
void change( int a[]) , the compiler converts the parameter to:
Select one:
a.
int *const a
b.
int &a;
c.
int a
d.
const int a; c++
Chapter 6 Solutions
Problem Solving with C++ (9th Edition)
Ch. 6.1 - Prob. 1STECh. 6.1 - Prob. 2STECh. 6.1 - Suppose that you are still writing the same...Ch. 6.1 - Prob. 4STECh. 6.1 - Prob. 5STECh. 6.1 - Prob. 6STECh. 6.1 - Suppose bla is an object, dobedo is a member...Ch. 6.1 - Prob. 8STECh. 6.1 - Prob. 9STECh. 6.1 - A program has read half of the lines in a file....
Ch. 6.1 - Prob. 11STECh. 6.2 - Prob. 12STECh. 6.2 - Prob. 13STECh. 6.2 - Prob. 14STECh. 6.2 - What output will be sent to the stuff.dat when the...Ch. 6.2 - Prob. 16STECh. 6.2 - In formatting output, the following flag constants...Ch. 6.2 - Here is a code segment that reads input from...Ch. 6.2 - Prob. 19STECh. 6.2 - Write the definition for a void function called...Ch. 6.2 - (This exercise is for those who have studied the...Ch. 6.3 - Suppose c is a variable of type char. What is the...Ch. 6.3 - Suppose c is a variable of type char. What is the...Ch. 6.3 - Prob. 24STECh. 6.3 - Consider the following code (and assume that it is...Ch. 6.3 - Consider the following code (and assume that it is...Ch. 6.3 - Suppose that the program described in Self-Test...Ch. 6.3 - Consider the following code (and assume that it is...Ch. 6.3 - Prob. 29STECh. 6.3 - Define a function called copyLine that takes one...Ch. 6.3 - Prob. 31STECh. 6.3 - (This exercise is for those who have studied the...Ch. 6.3 - (This exercise is for those who have studied the...Ch. 6.3 - Suppose ins is a file input stream that has been...Ch. 6.3 - Write the definition for a void function called...Ch. 6.3 - Consider the following code (and assume that it is...Ch. 6.3 - Write some C++ code that will read a line of text...Ch. 6 - Write a program that will search a file of numbers...Ch. 6 - Write a program that takes its input from a file...Ch. 6 - a. Compute the median of a data file. The median...Ch. 6 - Write a program that takes its input from a file...Ch. 6 - Write a program that gives and takes advice on...Ch. 6 - Write a program that reads text from one file and...Ch. 6 - Prob. 7PCh. 6 - Write a program to generate personalized junk...Ch. 6 - Write a program to compute numeric grades for a...Ch. 6 - Enhance the program you wrote for Programming...Ch. 6 - Prob. 4PPCh. 6 - Write a program that will correct a C++ program...Ch. 6 - Write a program that allows the user to type in...Ch. 6 - This project is the same as Programming Project 6,...Ch. 6 - This program numbers the lines found in a text...Ch. 6 - Write a program that computes all of the following...Ch. 6 - The text file babynames2012.txt, which is included...Ch. 6 - To complete this problem you must have a computer...Ch. 6 - Write a program that prompts the user to input the...Ch. 6 - The following is an old word puzzle: Name a common...
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