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  1. //Devin Scheu                                  CS1A                                    Chapter 10, P. 588, #2
  2. //
  3. /**************************************************************
  4. *
  5. * DISPLAY C-STRING BACKWARD
  6. * ____________________________________________________________
  7. * This program reverses and displays the contents of a C-string.
  8. * ____________________________________________________________
  9. * INPUT
  10. * inputString : The C-string entered by the user
  11. *
  12. * OUTPUT
  13. * reversedString : The reversed contents of the C-string
  14. *
  15. **************************************************************/
  16.  
  17. #include <iostream>
  18. #include <iomanip>
  19.  
  20. using namespace std;
  21.  
  22. // Function to display C-string backward using pointer notation
  23. void displayBackward(const char* str) {
  24.     const char* end = str;
  25.     while (*end != '\0') {
  26.         end++;
  27.     }
  28.     end--; // Move back to the last character
  29.     while (end >= str) {
  30.         cout << *end;
  31.         end--;
  32.     }
  33.     cout << endl;
  34. }
  35.  
  36. int main () {
  37.  
  38. 	//Variable Declarations
  39. 	const int MAX_SIZE = 100;      //OUTPUT     - Maximum size of the input string
  40. 	char inputString[MAX_SIZE];    //INPUT      - The C-string entered by the user
  41. 	string reversedString;         //OUTPUT     - The reversed contents of the C-string
  42.  
  43. 	//Prompt for Input and Echo
  44. 	cout << "Enter a string (max 99 characters): ";
  45. 	cin.getline(inputString, MAX_SIZE);
  46. 	cout << inputString << endl;
  47.  
  48. 	//Separator and Output Section
  49. 	cout << "-------------------------------------------------------" << endl;
  50. 	cout << "OUTPUT:" << endl;
  51.  
  52. 	//Display Backward
  53. 	cout << left << setw(25) << "Reversed String:" << right;
  54. 	displayBackward(inputString);
  55.  
  56. } //end of main()
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin 
Racecar
stdout 
Enter a string (max 99 characters): Racecar
-------------------------------------------------------
OUTPUT:
Reversed String:         racecaR
https://ideone.com/VEyl0S
language:
C++ (gcc 8.3)
created:
9 days ago
visibility:
public

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