Question

Write a program in C++ to read a large piece of text from the user (multiple lines) until the user inputs EOF. Assume the input only contains alphabets, numbers, commas and periods. The program should first compute the number of occurrences of each character in the input. Next, the program displays a sorted list (in descending order) of each character and the corresponding number of occurrences of that character. The sorting should be performed on the counts and not the characters.

Answer 1

Note: Could you plz go this code and let me know if u need any changes in this.Thank You
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#include <fstream>
#include <iostream>
#include <iomanip>
using namespace std;

int main()
{
//Declaring variables
string str;
int val;
char chars[26];
int freq[26] = { 0 };

for (int i = 0; i < 26; i++) {
chars[i] = (char)(65 + i);
}
//Getting the input entered by the user until the user enters EOF
cout << "Enter the String :";
cin >> str;
while (str.compare("EOF") != 0) {
for (int i = 0; i < str.length(); i++) {
char ch = str.at(i);
if (ch >= 'a' && ch <= 'z') {
val = ch - 97;
freq[val]++;
}
else if (ch >= 'A' && ch <= 'Z') {
val = ch - 65;
freq[val]++;
}
}

cin >> str;
}

//This Logic will Sort the Array of elements in Decending order
int temp1;
char temp;
for (int i = 0; i < 26; i++) {
for (int j = i + 1; j < 26; j++) {
if (freq[i] < freq[j]) {
temp1 = freq[i];
freq[i] = freq[j];
freq[j] = temp1;

temp = chars[i];
chars[i] = chars[j];
chars[j] = temp;
}
}
}

//Displaying the output
cout << " Character Frequency" << endl;
cout << "--------- ---------" << endl;

for (int i = 0; i < 26; i++) {
cout << chars[i] << " " << freq[i] << endl;
}

return 0;
}

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Output:

_______________Could you plz rate me well.Thank You