C++ Codes - Basic to Advanced 💻

#C++ #SmartPointers #MemoryManagement #RAII

Smart Pointers: std::unique_ptr cpp #include <iostream> #include <memory> class Resource { public: Resource() { std::cout << "Resource acquired.\n"; } ~Resource() { std::cout << "Resource released.\n"; } void do_something() { std::cout << "Resource doing something.\n"; } }; int main() { std::unique_ptr<Resource> ptr1 = std::make_unique<Resource>(); ptr1->do_something(); std::unique_ptr<Resource> ptr2; ptr2 = std::move(ptr1); if (ptr1 == nullptr) { std::cout << "ptr1 is now null.\n"; } if (ptr2) { ptr2->do_something(); } return 0; } 

#Cprogramming #HelloWorld #Basics #Ctutorial

Hello World in C c #include <stdio.h> int main() { printf("Hello, World!\n"); return 0; } 

#CPP #pointers #dynamicmemory #memorymanagement

Pointers and Dynamic Memory Allocation in C++

#include <iostream>

int main() {
  int *ptr;
  ptr = new int;
  *ptr = 10;
  std::cout << "Value at ptr: " << *ptr << std::endl;
  delete ptr;
  ptr = nullptr;
  return 0;
}

#CPP #BasicProgramming #InputOutput #Arithmetic

C++: Reading Integers and Calculating Their Sum

#include <iostream>

int main() {
    int num1, num2, sum;
    std::cin >> num1 >> num2;
    sum = num1 + num2;
    std::cout << sum << std::endl;
    return 0;
}

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#Cprogramming #Pointers #MemoryManagement #DynamicAllocation

Pointers and Memory Allocation in C

#include <stdio.h>
#include <stdlib.h>

int main() {
    int *ptr;
    int n = 5;

    ptr = (int*) malloc(n * sizeof(int));

    if (ptr == NULL) {
        printf("Memory allocation failed!\n");
        return 1;
    }

    for (int i = 0; i < n; i++) {
        ptr[i] = i * 2;
    }

    for (int i = 0; i < n; i++) {
        printf("ptr[%d] = %d\n", i, ptr[i]);
    }

    free(ptr);
    ptr = NULL;

    return 0;
}

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