Write a program with three functions: upper , lower , and reverse .

Question

Write a program with three functions: upper , lower , and reverse .

Posted on March 1, 2025

Write a program with three functions: upper , lower , and reverse . The upper function 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 upper- 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 .

Bobby · Answer

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KFSys · Answer

Heya, You can use the DigitalOcean AI product for AI-driven code assistance and automation. Check it out here : DigitalOcean Gen AI . As for answering your question. Below is the C++ program implementing the upper, lower, and reverse functions: #include #include // For toupper() and tolower() #include // For strlen() using namespace std; // Function to convert string to uppercase void upper(char *str) { while (*str) { *str = toupper(*str); str++; } } // Function to convert string to lowercase void lower(char *str) { while (*str) { *str = tolower(*str); str++; } } // Function to reverse case of each character in the string void reverse(char *str) { while (*str) { if (islower(*str)) *str = toupper(*str); else if (isupper(*str)) *str = tolower(*str); str++; } } int main() { const int SIZE = 100; // Maximum string size char input[SIZE]; // Asking the user for a string input cout << "Enter a string: "; cin.getline(input, SIZE); // Apply the functions in the required order reverse(input); cout << "Reversed case: " << input << endl; lower(input); cout << "Lowercase: " << input << endl; upper(input); cout << "Uppercase: " << input << endl; return 0; }

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Write a program with three functions: upper , lower , and reverse .

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Write a program with three functions: upper , lower , and reverse .

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