Arrays in C++

Arrays are used to store similar kind of data. Example: int marks[2 ]; Here marks is an array that can store two values.

Examples of Array in C++ – Example 1

Program in which you “Enter No of times you want to Find Square Root”.

#include<iostream>
#include<Math.h>
using namespace std;
int main()
{


int HowManyTimes;


cout<<"Enter No of HowManyTimes you want to Find Square Root "<<endl;
cin>>HowManyTimes;
float array[HowManyTimes];
for(int i=0;i<HowManyTimes;i++){
	cout<<"Enter Value "<<i+1<<endl;
	cin>>array[i];
}

for(int i=0;i<HowManyTimes;i++){
	 
 if(array[i] >=0 )
{
cout<<"squareroot of "<<array[i]<<"is "<<sqrt(array[i])<<endl;	
}
else
{
	cout<<"complex root"<<endl;
 } 

}
 return 0;	
	
}

#include<iostream>

#include<Math.h>

using namespace std;

int main()

{

int HowManyTimes;

cout<<"Enter No of HowManyTimes you want to Find Square Root "<<endl;

cin>>HowManyTimes;

float array[HowManyTimes];

for(int i=0;i<HowManyTimes;i++){

cout<<"Enter Value "<<i+1<<endl;

cin>>array[i];

}

for(int i=0;i<HowManyTimes;i++){

if(array[i] >=0 )

{

cout<<"squareroot of "<<array[i]<<"is "<<sqrt(array[i])<<endl;

}

else

{

cout<<"complex root"<<endl;

}

return 0;

}

Output

Examples of Array in C++ – Example 2

Program to insert an element in an array at a specific position.

#include<iostream>
using namespace std;
int main()
{
	int ArrayToStore[100];
	int size;
	int place;
	int value;
	
	cout<<"Please type the number of values:"<<endl;
	cin>>size;
	
	cout<<"Enter values:"<<endl;
	int i=0;
	do
	{
		cin>>ArrayToStore[i];
		i++;
	}
	while(i<size);
	
	cout<<"Current values are:"<<endl;
	for(int i=0; i<size; i++)
	{
		cout<<ArrayToStore[i]<<" ";
	}
	
	cout<<endl<<"please type place where you want to insert value:"<<endl;
	cin>>place;
	
	cout<<"Please Enter the new value:"<<endl;
	cin>>value;
	
	for(int i=size; i>=place; i--)
	{
		ArrayToStore[i]=ArrayToStore[i-1];	
	}
	ArrayToStore[place-1]=value;
	cout<<"The ArrayToStore after new values:"<<endl;
	i=0;
	while(i<size+1)
	{
		cout<<ArrayToStore[i]<<" ";
		i++;
	}
}

#include<iostream>

using namespace std;

int main()

{

int ArrayToStore[100];

int size;

int place;

int value;

cout<<"Please type the number of values:"<<endl;

cin>>size;

cout<<"Enter values:"<<endl;

int i=0;

{

cin>>ArrayToStore[i];

i++;

}

while(i<size);

cout<<"Current values are:"<<endl;

for(int i=0; i<size; i++)

{

cout<<ArrayToStore[i]<<" ";

}

cout<<endl<<"please type place where you want to insert value:"<<endl;

cin>>place;

cout<<"Please Enter the new value:"<<endl;

cin>>value;

for(int i=size; i>=place; i--)

{

ArrayToStore[i]=ArrayToStore[i-1];

}

ArrayToStore[place-1]=value;

cout<<"The ArrayToStore after new values:"<<endl;

i=0;

while(i<size+1)

{

cout<<ArrayToStore[i]<<" ";

i++;

}

Output

basic example of C++ Arrays — **Figure:** Basic example of C++ Arrays

Examples of Array in C++ – Example 3

Program to combine two string in C++.

#include<iostream>
#include<string.h>
using namespace std;
int main()
{
	char a[10]="T4",b[10]="Tutorials";
	cout<<"1st string = "<<a<<endl;
	cout<<"2nd string = "<<b<<endl;
	strcat(a,b);
	cout<<"The combined string is = "<<a;
	
}

#include<iostream>

#include<string.h>

using namespace std;

int main()

{

char a[10]="T4",b[10]="Tutorials";

cout<<"1st string = "<<a<<endl;

cout<<"2nd string = "<<b<<endl;

strcat(a,b);

cout<<"The combined string is = "<<a;

}

Output

C++ program to combine two strings with array — **Figure:** C++ program to combine two strings with an array

Arrays in C++
By: Prof. Dr. Fazal Rehman | Last updated: April 20, 2023

Arrays in C++

Examples of Array in C++ – Example 1

Examples of Array in C++ – Example 2

Examples of Array in C++ – Example 3

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