Answer to Question #278148 in C++ for zain

Question

Write a Menu Driven C++ program that creates a character array/string by taking input from user and perform following tasks by displaying menu to user, the menu operations are implemented using functions: a) Length of string.

b) Character, consonants and vowels count in a string

c) Palindrome check

d) Character search within the string. If found display its starting position.

e) covert to either case (i.e., if string is in lower case then convert it to upper case and vice versa.) 

Answer 1

#include<iostream>
using ​namespace std;


int stringLength()
{   string myString;
	cout << "String Length = " << myString.length();
}
void characterCount()
{
	char line[150];
    int vowels, consonants, digits, spaces;


    vowels =  consonants = digits = spaces = 0;


    cout << "Enter a line of string: ";
    cin.getline(line, 150);
    for(int i = 0; line[i]!='\0'; ++i)
    {
        if(line[i]=='a' || line[i]=='e' || line[i]=='i' ||
           line[i]=='o' || line[i]=='u' || line[i]=='A' ||
           line[i]=='E' || line[i]=='I' || line[i]=='O' ||
           line[i]=='U')
        {
            ++vowels;
        }
        else if((line[i]>='a'&& line[i]<='z') || (line[i]>='A'&& line[i]<='Z'))
        {
            ++consonants;
        }
        else if(line[i]>='0' && line[i]<='9')
        {
            ++digits;
        }
        else if (line[i]==' ')
        {
            ++spaces;
        }
    }


    cout << "Vowels: " << vowels << endl;
    cout << "Consonants: " << consonants << endl;
    cout << "Digits: " << digits << endl;
    cout << "White spaces: " << spaces << endl;
}
void palindromeCheck()
{
	 int n,r,sum=0,temp;    
  cout<<"Enter the Number=";    
  cin>>n;    
 temp=n;    
 while(n>0)    
{    
 r=n%10;    
 sum=(sum*10)+r;    
 n=n/10;    
}    
if(temp==sum)    
cout<<"Number is Palindrome.";    
else    
cout<<"Number is not Palindrome.";   
}


void characterSearch()
{
	std::string myString ;
auto ​it = mystring.find("cat");


if ​(it != std::string::npos)
    std::cout << "Found at position: " << it << '\n';
else
    std::cout << "Not found!\n";
}
void caseConvert()
{
	string myString;
  
    // using transform() function and ::toupper in STL
    transform(su.begin(), su.end(), su.begin(), ::toupper);
    cout << su << endl;
  
    // sl is the string which is converted to lowercase
    string sl = "Jatin Goyal";
  
    // using transform() function and ::tolower in STL
    transform(sl.begin(), sl.end(), sl.begin(), ::tolower);
    cout << sl << endl;
}
int main()
{
	string myString;
	cout<<"\n Enter any string you think of: ";
	getline(cin, myString);
	char option;
	cout<<"\nSelect what you want to do";
	cout<<"\n a. Length of string\n b.  Character, consonants and vowels count in a string. \n c. Palindrome check.\n d.Character search within the string. If found display its starting position.\n e. covert to either case ";
    cin>>option;
    switch(option)
    {
      case 'a':
    stringLength();
    cout << "String Length = " << myString.length();
    break;
      case 'b':
    characterCount();
	break;
	case 'c':
	palindromeCheck();
	break;
	case 'd':
	characterSearch();
	break;
	case 'e':
	caseConvert();
	break;
	default:
	cout<<"Invalid choice. Try again by entering a to e";	
  }
}