point.comArray in C++
The array is a collection of data that store the fixed number of values of the same type.
Syntax:-
type array_Name [ array_Size ];
Example:
if we want to store marks of 100 students, then we can create an array for it.
float marks[100];
Size and type of arrays cannot change after it's declared.
Two types of Arrays:
- One-dimensional arrays
- Multidimensional(2D) arrays
| Array Type | Description |
|---|---|
| Single Dimensional array | In this we create and initialize all the values in the single array. |
| Multi-Dimensional Array | C++ supports the multi-dimensional array. The multi-dimensional array also called as the Two-Dimensional array. |
| Pointer to an array | You can generate and use the pointer to the first element by simply specifying the array name without declaring any index. |
| Passing arrays to function | You can pass to the function of a pointer to an array by specifying the array name. |
| Return array of functions | It allows a function to return an array. |
Advantages of an array:
- It is better to store the data of the same data type with the same size.
- Coding is less, one variable can store a number of values.
- It allocates memory in different memory locations for its elements. There is no memory flow or shortage of memory in arrays.
- Iterating is faster in arrays compared to other methods like a linked list.
- By using array data retrieving is easy.
- Easily short the data using the swapping method.
- By array index, we can randomly access any element from the array.
- It supports multidimensional array.
Array Declaration in C++
To declare an array in C++ programming language.
Syntax:-
data_type array_name[array_size];
Array Initialization in C++
An array is initialized by using the index of each element.
Syntax:-
int score[4] = {100, 221, 59, 54};
Example:-
#include <iostream>
using namespace std;
int main(){
int i=0;
int score[4] = {100, 221, 59, 54};
for(i=0; i<4; i++){
cout << " Element[" << i << "]= " << score[i] << endl;
}
}
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