Question

Write a program that accepts a string and character as input, then counts and displays the number of times that character appears (in upper- or lowercase) in the string. Use C++

Enter a string: mallet
Enter a character: a

"A" appears 1 time(s)

Enter a string: Racecar
Enter a character: R

"R" appears 2 time(s)

Answer 1

#include <iostream>

using namespace std;

int countChar(string s, char ch){
    int count = 0;
    for(int i = 0;i<s.length();i++){
        if(s[i]>='a' && s[i]<='z'){
            if((char)(s[i]-32)==ch){
                count++;
            }
        }
        else if(s[i]==ch){
            count++;
        }
    }
    return count;
}

int main()
{
    string s;
    char ch;
    
    cout<<"Enter a string: ";
    cin>>s;
    
    cout<<"Enter a character: ";
    cin>>ch;

    if(ch>='a' && ch<='z'){
        ch = ch - 32;
    }
    
    cout<<"\n\""<<ch<<"\" appears "<<countChar(s,ch)<<" time(s)"<<endl;
    return 0;
}