11.16 LAB: Reverse a string Write a recursive function called ReverseString() that takes in a string as a parameter and returns the string in reversed order. The main function is provided to read a string from the user and call the ReverseString() function. Ex: If the input of the program is: Hello the ReverseString() function returns and the program outputs: Reverse of "Hello" is "olleH". Ex: If the input of the program is: Hello, world! the ReverseString() function returns and the program outputs: Reverse of "Hello, world!" is "!dlrow,olleH". Hint: Move the first character to the end of the returning string and pass the remaining sub-string to the next ReverseString() function call.

#include <iostream> using namespace std; int rectArea (int len, int wid) { return len * wid; } int main () { int length, width; cin >> length >> width; cout << "The area of a " << length << " by " << width << " rectangle is " << /*add code to call the reacArea function */ << "." << endl; return 0; }

Consider the following recursive function: void exercise(int x) { if (x > 0 && x < 10) { cout << x << " "; exercise(x + 1); } } What is the output of the following statements? a. exercise(0); b. exercise(5); c. exercise(10); d. exercise(-5);

#include // Function to calculate the factorial of a given positive integer int factorial(int n) { // TODO: Implement the factorial function here } int main() { int num; printf("Enter a positive integer: "); scanf("%d", &num); // TODO: Call the factorial function and print the result } return 0; • Q1: Write a C program to calculate the factorial of a given positive integer entered by the user.

Solve in C++ using the given code and avoid using vectors

: Implement a function void reverse( char* str) in C or C++ which reversesa null-terminated string.

Zybooks C++ 1.7 LAB: Introduction to data structures labs Step 1: Producing correct output Three commented-out lines of code exist in main(). Uncomment the lines and click the "Run program" button. Verify that the program's output is: 2 + 2 = 4 Unknown function: PrintPlus2 Secret string: "abc" Submit your code for grading. Your submission will pass the "Compare output" test only, achieving 1 of the possible 10 points. Step 2: Inspecting the LabPrinter class Inspect the LabPrinter class implemented in the LabPrinter.h file. Access LabPrinter.h by clicking on the orange arrow next to main.cpp at the top of the coding window. Member functions Print2Plus2() and PrintSecret() print strings using std::cout. Step 3: Implementing CallFunctionNamed() Remove the three uncommented lines from main(). Then implement the CallFunctionNamed() function in main.cpp to handle three cases: If functionName is "Print2Plus2", call printer's Print2Plus2() member function. If functionName is "PrintSecret",...

C++ This a question to create a C string function. Create a function strfind(cs, c) that returns the index of the first occurrence of character c in C string cs. In case c is not found, −1 is returned. Implement the function as efficiently as possible.