Question

10. replaceSubstring Function Write a function named replaceSubstring. The function should accept three C-string or string object arguments. Let's call them string1, string2, and string3. It should search string for all occurrences of string2. When it finds an occurrence of Programming Challenges string2, it should replace it with string. For example, suppose the three arguments have the following values: stringt: "the dog jumped over the fence" string 2 "the" string3: "that" With these three arguments, the function would return a string object with the value "that dog jumped over that fence." Demonstrate the function in a complete program. 11. Case Manipulator Write a program with three functions: upper, lower, and reverse. The upper func- tion should accept a pointer to a C-string as an argument. It should step through each character in the string, converting it to uppercase. The lower function, too, should accept a pointer to a C-string as an argument. It should step through each character in the string, converting it to lowercase. Like upper and lower, reverse should also accept a pointer to a string. As it steps through the string, it should test each character to determine whether it is uppercase or lowercase. If a character is uppercase, it should be converted to lowercase. Likewise, if a character is lowercase, it should be converted to uppercase. Test the functions by asking for a string in function main, then passing it to them in the following order: reverse, lower, and upper. Using C++ You must use good programming style as shown in the examples in the textbook to include ample comments in your source code. You must include helpful information in a header block such as the program description, the source of your program, your name, and the date. Your program must input the string "Calhoun Community College" (without the quotes) from either the keyboard or a file for your program submission, and you must store this text in a C++ C-string. You must develop and call the specified 3 functions of upper, lower, and reverse from your main function. You must pass your C-string to each of the 3 functions and obtain the correct results of a display of all upper case characters, all lowercase characters, and uppercase converted to lowercase characters with lowercase converted to uppercase characters properly.

Answer 1

I have solved Question 10. replaceString()

Step 1 : Save the following code in Replace.cpp

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

string replaceString(string string1, string string2, string string3) {
string result;
// Create a string stream for parsing
stringstream stream(string1);
string temp;
// Tokenizing w.r.t. space ' '
while (getline(stream, temp, ' ')) {
if (string2 == temp) {
result += string3;
} else {
result += temp;
}
result += ' ';
}
return result;
}

int main() {
string string1 = "the dog jumped over the fence";
string string2 = "the";
string string3 = "that";
string replaced = replaceString(string1, string2, string3);
cout << replaced;
return 0;
}

Step 2 : Compile the program and run. It will produce the following output

that dog jumped over that fence

Note. Please file a different question for Question 11 since I do not have answer for this. Some one else will answer