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About C++

C++ is a general-purpose programming language created by Bjarne Stroustrup as an extension of the C programming language, or "C with Classes".

About C

C is a general-purpose, procedural computer programming language supporting structured programming, lexical variable scope, and recursion, with a static type system.

Palindrome Check Example: C++ vs C

Palindrome Check in C++

#include <iostream>
#include <string>
#include <algorithm>
using namespace std;

bool isPalindrome(string str) {
    string clean;
    // Keep alphanumeric chars and convert to lowercase
    for(char c : str) {
        if(isalnum(c)) {
            clean += tolower(c);
        }
    }
    
    string reversed = clean;
    reverse(reversed.begin(), reversed.end());
    return clean == reversed;
}

int main() {
    cout << boolalpha;
    cout << isPalindrome("A man, a plan, a canal: Panama") << endl; // true
    cout << isPalindrome("race a car") << endl; // false
    return 0;
}

Palindrome Check in C

#include <stdio.h>
#include <string.h>
#include <ctype.h>

int isPalindrome(export const char* str) {
    char clean[1000];
    int j = 0;
    
    // Clean the string
    for(int i = 0; str[i]; i++) {
        if(isalnum(str[i])) {
            clean[j++] = tolower(str[i]);
        }
    }
    clean[j] = '\0';
    
    // Check palindrome
    int left = 0;
    int right = strlen(clean) - 1;
    while(left < right) {
        if(clean[left] != clean[right]) return 0;
        left++;
        right--;
    }
    return 1;
}

int main() {
    printf("%d\n", isPalindrome("A man, a plan, a canal: Panama")); // 1
    printf("%d\n", isPalindrome("race a car")); // 0
    return 0;
}

Bubble Sort Example: C++ vs C

Bubble Sort in C++

#include <iostream>
#include <vector>
using namespace std;

void bubbleSort(vector<int>& arr) {
    int n = arr.size();
    for(int i = 0; i < n; i++) {
        for(int j = 0; j < n - i - 1; j++) {
            if(arr[j] > arr[j + 1]) {
                swap(arr[j], arr[j + 1]);
            }
        }
    }
}

int main() {
    vector<int> arr = {64, 34, 25, 12, 22, 11, 90};
    bubbleSort(arr);
    
    for(int num : arr) {
        cout << num << " ";
    }
    return 0;
}

Bubble Sort in C

#include <stdio.h>

void bubbleSort(int arr[], int n) {
    for(int i = 0; i < n; i++) {
        for(int j = 0; j < n - i - 1; j++) {
            if(arr[j] > arr[j + 1]) {
                int temp = arr[j];
                arr[j] = arr[j + 1];
                arr[j + 1] = temp;
            }
        }
    }
}

int main() {
    int arr[] = {64, 34, 25, 12, 22, 11, 90};
    int n = sizeof(arr)/sizeof(arr[0]);
    
    bubbleSort(arr, n);
    
    for(int i = 0; i < n; i++) {
        printf("%d ", arr[i]);
    }
    return 0;
}

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