C++ Array to Function - Learn With AVRK

C++ Passing Array to Function

In C++, to reuse array argument, we can create function. To pass an array to function in C++, we only need to provide the array name.

functionname(arrayname); /*passing array to function*/       

C++ Passing Array to Function Example: print array elements

Let's look at an example of a C++ function that prints array elements.

#include <iostream> 
using namespace std;
void printArray(int arr[5]);
int main()
{
    int arr1[5] = { 2, 20, 40, 60, 80 };
    int arr2[5] = { 3, 6, 9, 12, 15 };
    printArray(arr1); /*passing array to function*/
    printArray(arr2);
}
void printArray(int arr[5])
{
    cout << "Printing array elements:"<< endl; 
    for (int i = 0; i < 5; i++)
    {
        cout<<arr[i]<<"\n";
    }
}

Output -

Printing array elements:
2
20
40
60
80
Printing array elements:
3
6
9
12
15

C++ Passing Array to Function Example: Print minimum number

Let's look at an example of a C++ array that prints the minimum number in an array using a function.

#include <iostream>  
using namespace std;  
void  printMin(int arr[5]);  
int main()  
{  
    int arr1[5] = { 60, 10, 20,80, 50 };    
    int arr2[5] = { 5,30, 15, 20, 35 };    
    printMin(arr1);/*passing array to function*/
    printMin(arr2);  
}  
void  printMin(int arr[5])  
{  
    int min = arr[0];    
        for (int i = 0; i < 5; i++)    
        {    
            if (min > arr[i])    
            {    
                min = arr[i];    
            }    
        }    
        cout<< "Minimum element is: "<< min <<"\n";    
}  

Output -

Minimum element is: 10                                                                
Minimum element is: 5  

C++ Passing Array to Function Example: Print maximum number

Let's look at an example of a C++ array that prints the maximum number in an array using a function.

#include <iostream>  
using namespace std;  
void  printMax(int arr[5]);  
int main()  
{  
    int arr1[5] = { 30, 10, 20, 40, 50 };    
    int arr2[5] = { 5, 15, 25, 35, 45 };    
    printMax(arr1);/*passing array to function*/
    printMax(arr2);  
}  
void  printMax(int arr[5])  
{  
    int max = arr[0];    
        for (int i = 0; i < 5; i++)    
        {    
            if (max < arr[i])    
            {    
                max = arr[i];    
            }    
        }    
        cout<< "Maximum element is: "<< max <<"\n";    
}  

Output -

Maximum element is: 50
Maximum element is: 45

Also check out this : C++ Arrays - Learn With AVRK