Letter frequency counter c++ – C++ Program to Find the Frequency of Characters in a String

September 5, 2022 by veer

Letter frequency counter c++: In the previous article, we have discussed C++ Program to Access Elements of an Array Using Pointer. In this article, we will see C++ Program to Find the Frequency of Characters in a String.

C++ Program to Find the Frequency of Characters in a String

C++ program to print count of all alphabets in a string.
How to print frequency of characters in a string.

C++ program to print frequency of characters in a string

C++ program to print frequency of characters in a string

#include <iostream>
#include <cstring>
 
using namespace std;
  
int main(){
    char inputString[1000];
    // we are using an integer array(initialized with zero) to store 
    // frequency of characters at index equal to their ascii value
    int i, count[256] = {0};
     
    cout << "Enter a String\n";
    gets(inputString);
     
    for(i=0; inputString[i] != '\0'; i++){
        // Populate frequency count array
        count[inputString[i]]++;
    }
     
    cout << "\nCharacter   Frequency\n";
    for(i=0; i < 256; i++){
        if(count[i] != 0){
          cout <<"  " << (char)i << "         " << count[i]<< endl;                    
        }
    }
  
    return 0;
}

Output

Enter a String
abbcd

Character   Frequency
   a             1
   b             2
   c             1
   d            1

Start writing code in C++ language by referring to Simple C++ Program Examples available here. These examples are helpful to get an idea on the format, function used in every basic program.

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