// #include <iostream>
// #include <vector>

// // Function to chunk the array
// std::vector<std::vector<int>> chunkArray(const std::vector<int>& arr, int chunkSize) {
//     std::vector<std::vector<int>> chunks;
//     int length = arr.size();
//     int index = 0;

//     while (index < length) {
//         std::vector<int> chunk;
//         for (int i = 0; i < chunkSize && index < length; i++) {
//             chunk.push_back(arr[index]);
//             index++;
//         }
//         chunks.push_back(chunk);
//     }

//     return chunks;
// }

// int main() {
//     // Example usage
//     std::vector<int> array = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
//     int chunkSize = 3;

//     std::vector<std::vector<int>> result = chunkArray(array, chunkSize);

//     // Print the chunks
//     for (const auto& chunk : result) {
//         for (const auto& element : chunk) {
//             std::cout << element << " ";
//         }
//         std::cout << std::endl;
//     }

//     return 0;
// }
// #include <iostream>
// #include <vector>

// // Function to chunk the array
// std::vector<std::vector<int>> chunkArray(const std::vector<int>& arr, int chunkSize) {
//     std::vector<std::vector<int>> chunks;
//     int length = arr.size();
//     int index = 0;

//     while (index < length) {
//         chunks.push_back(std::vector<int>(arr.begin() + index, arr.begin() + index + chunkSize));
//         index += chunkSize;
//     }

//     return chunks;
// }

// int main() {
//     // Example usage
//     std::vector<int> array = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
//     int chunkSize = 3;

//     std::vector<std::vector<int>> result = chunkArray(array, chunkSize);

//     // Print the chunks
//     for (const auto& chunk : result) {
//         for (const auto& element : chunk) {
//             std::cout << element << " ";
//         }
//         std::cout << std::endl;
//     }

//     return 0;
// }

#include <iostream>
#include <vector>
#include <algorithm>

// Function to chunk the array
std::vector<std::vector<int>> chunkArray(const std::vector<int>& arr, int chunkSize) {
    std::vector<std::vector<int>> chunks;
    int length = arr.size();
    int index = 0;

    while (index < length) {
        int endIndex = std::min(index + chunkSize, length);
        chunks.push_back(std::vector<int>(arr.begin() + index, arr.begin() + endIndex));
        index += chunkSize;
    }

    return chunks;
}

int main() {
    // Example usage
    std::vector<int> array = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
    int chunkSize = 3;

    std::vector<std::vector<int>> result = chunkArray(array, chunkSize);

    // Print the chunks
    for (const auto& chunk : result) {
        for (const auto& element : chunk) {
            std::cout << element << " ";
        }
        std::cout << std::endl;
    }

    return 0;
}
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C++ Online Compiler

Write, Run & Share C++ code online using OneCompiler's C++ online compiler for free. It's one of the robust, feature-rich online compilers for C++ language, running on the latest version 17. Getting started with the OneCompiler's C++ compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as C++ and start coding!

Read inputs from stdin

OneCompiler's C++ online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.

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

int main() 
{
    string name;
    cout << "Enter name:";
    getline (cin, name);
    cout << "Hello " << name;
    return 0;
}

About C++

C++ is a widely used middle-level programming language.

  • Supports different platforms like Windows, various Linux flavours, MacOS etc
  • C++ supports OOPS concepts like Inheritance, Polymorphism, Encapsulation and Abstraction.
  • Case-sensitive
  • C++ is a compiler based language
  • C++ supports structured programming language
  • C++ provides alot of inbuilt functions and also supports dynamic memory allocation.
  • Like C, C++ also allows you to play with memory using Pointers.

Syntax help

Loops

1. If-Else:

When ever you want to perform a set of operations based on a condition If-Else is used.

if(conditional-expression) {
   //code
}
else {
   //code
}

You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.

2. Switch:

Switch is an alternative to If-Else-If ladder.

switch(conditional-expression){    
case value1:    
 // code    
 break;  // optional  
case value2:    
 // code    
 break;  // optional  
......    
    
default:     
 code to be executed when all the above cases are not matched;    
}

3. For:

For loop is used to iterate a set of statements based on a condition.

for(Initialization; Condition; Increment/decrement){  
  //code  
}

4. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

while (condition) {  
// code 
}

5. Do-While:

Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.

do {  
 // code 
} while (condition);

Functions

Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increases re-usuability and modularity. Function gets run only when it is called.

How to declare a Function:

return_type function_name(parameters);

How to call a Function:

function_name (parameters)

How to define a Function:

return_type function_name(parameters) {  
 // code
}