In this lab, you complete a partially written C++ program that includes built-in functions that convert characters stored in a character array to all uppercase or all lowercase. The program prompts the user to enter nine characters. For each character in the array, you call the built- in functions tolower() and toupper(). Both of these functions return a character with the character changed to uppercase or lowercase. Here is an example: char sample1 = 'A'; char sample2 = 'a'; char result1, result2; result1 = tolower(sample1); result2 = toupper(sample2); The source code file provided for this lab includes the necessary variable declarations and the necessary input and output statements. Comments are included in the file to help you write the remainder of the program. // ChangeCase.cpp - This program converts characters to lowercase and uppercase. // Input: Interactive // Output: Uppercase and lowercase versions of the user-entered string #include #include using namespace std; int main() { const int LEN = 9; char sample1[LEN]; char sample2[LEN]; char result1; char result2; int i; cout << "Enter 9 lowercase characters: "; for(i = 0; i < LEN; i++) { cin >> sample1[i]; // Convert sample1[i] to uppercase and assign it to result1 cout << result1 << endl; } cin.ignore(256,'\n'); cout << "Enter 9 uppercase characters: "; for(i = 0; i < LEN; i++) { cin >> sample2[i]; // Convert sample2[i] to lowercase and assign it to result2 cout << result2 << endl; } cin.ignore(256,'\n'); return 0; } // End of main() function

C++ for Engineers and Scientists

4th Edition

ISBN:9781133187844

Author:Bronson, Gary J.

Publisher:Bronson, Gary J.

Chapter6: Modularity Using Functions

Section6.2: Returning A Single Value

Problem 13E

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In this lab, you complete a partially written C++ program that includes built-in functions that convert characters stored in a character array to all uppercase or all lowercase.

The program prompts the user to enter nine characters. For each character in the array, you call the built- in functions tolower() and toupper(). Both of these functions return a character with the character changed to uppercase or lowercase. Here is an example:

char sample1 = 'A';
char sample2 = 'a';
char result1, result2;
result1 = tolower(sample1);
result2 = toupper(sample2);

The source code file provided for this lab includes the necessary variable declarations and the necessary input and output statements. Comments are included in the file to help you write the remainder of the program.

// ChangeCase.cpp - This program converts characters to lowercase and uppercase.

// Input: Interactive

// Output: Uppercase and lowercase versions of the user-entered string

#include <iostream>

#include <string>

using namespace std;

int main()

{

const int LEN = 9;

char sample1[LEN];

char sample2[LEN];

char result1;

char result2;

int i;

cout << "Enter 9 lowercase characters: ";

for(i = 0; i < LEN; i++)

{

cin >> sample1[i];

// Convert sample1[i] to uppercase and assign it to result1

cout << result1 << endl;

}

cin.ignore(256,'\n');

cout << "Enter 9 uppercase characters: ";

for(i = 0; i < LEN; i++)

{

cin >> sample2[i];

// Convert sample2[i] to lowercase and assign it to result2

cout << result2 << endl;

}

cin.ignore(256,'\n');

return 0;

} // End of main() function

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