Array in c++

Number of elements in c++ array

#include <iostream>
using std::cout;

int a[] = { 1, 2, 3, 4, 5 };
int counta()
  {
  return sizeof( a ) / sizeof( a[ 0 ] );  // works, since a[] is an array
  }

int countb( int b[] )
  {
  return sizeof( b ) / sizeof( b[ 0 ] );  // fails, since b[] is a pointer
  }

Creare array con c++

#include <iostream>
int main()
{
int myArray[] {2, 4, 6, 8, 10};
for (int i=0; i<5; i++)
{
std::cout << "index: " << i << " - value: " << myArray[i] << "\n";
}
return 0;
}

Source: html.it

C++ array

const int len = 3;
int arr[len];

arr[0] = 4;

int abc[4]{0,12,3}

Array in c++

int jimmy [3][5];

Source: cplusplus.com

Array in c++

char century [100][365][24][60][60];

-1

Source: cplusplus.com

Std::array c++

// An example of using std::array
// Basic syntax: std::array<TYPE, SIZE> NAME;
// Note that the size must be a constant

#include <iostream>
#include <array> // Use std::array

int main() {
	std::array<int, 10> arr;
  	arr[0] = 5; // Setting an element
  	std::cout << arr[0] << std::endl; // Element access
  	std::cout << arr.at(0) << std::endl; // Element access with bounds checking
}

-3

Similar codes

1 vote212 views1 answer
Delete a head node in link list
C++
45 votes223 views6 answers
Input in c++
C++
3 votes209 views10 answers
1+1
C++
104 votes305 views6 answers
Integer to string c++
C++
0 vote215 views1 answer
Unordered_set to vector
C++
0 vote268 views1 answer
Error: use of parameter outside function body before ] token c++
C++
0 vote233 views1 answer
Balanced brackets hackerrank solution c++
C++
0 vote217 views1 answer
Shuffle elements c++
C++
2 votes197 views2 answers
Count bits c++
C++
0 vote299 views3 answers
C++ program to convert celsius to kelvin
C++