Program to insert an element in an array at a specific position in C++

By Prof. Fazal Rehman Shamil
	
Last modified on January 29th, 2021

Program to insert an element in an array at a specific position in C++

In this tutorial, we will try to learn about the program of insert an element in an array at a specific position in C++ (C Plus Plus, CPP).

Step 1:

First of all, we need to enter the total number of elements we want to insert.

Step 2:

Enter values in elements.

Step 3:

Select the location where you want to insert the values in the elements.

Step 4:

Enter the value to insert into the element.

Step 5:

Display result values.

Program of the insert of an element in an array at a specific position in C++ (C Plus Plus, CPP)

#include <iostream>
using namespace std;
int main()
{
int array[100], position, c, n, value;
cout<<"Enter number of elements in array\n"<<endl;
cin>>n;
cout<<"Enter elements\n"<<endl;
for (c = 0; c < n; c++)
{
cin>>array[c];
}
cout<<"Enter the location where you wish to insert an element\n"<<endl;
cin>>position;
cout<<"Enter the value to insert\n"<<endl;
cin>>value;
for (c = n - 1; c >= position - 1; c--)
{
array[c+1] = array[c];
}
array[position-1] = value;
cout<<"Resultant array is\n"<<endl;
for (c = 0; c <= n; c++)
{
cout<<array[c]; 
}
return 0;
}

#include <iostream>

using namespace std;

int main()

{

int array[100], position, c, n, value;

cout<<"Enter number of elements in array\n"<<endl;

cin>>n;

cout<<"Enter elements\n"<<endl;

for (c = 0; c < n; c++)

{

cin>>array[c];

}

cout<<"Enter the location where you wish to insert an element\n"<<endl;

cin>>position;

cout<<"Enter the value to insert\n"<<endl;

cin>>value;

for (c = n - 1; c >= position - 1; c--)

{

array[c+1] = array[c];

}

array[position-1] = value;

cout<<"Resultant array is\n"<<endl;

for (c = 0; c <= n; c++)

{

cout<<array[c];

}

return 0;

}

Output

insert of element in array at any specific position program in cpp, cplusplus, c c++ flowchart — **Figure:** insert of the element in an array at any specific position program in CPP, C Plus Plus, c c++ flowchart.

C++ program to insert an element in an array at a given position

c program to update an element in an array

insert an element at the START of array in c++ — insert an element at the START of the array in c++

c++ program to insert an element in an array using for loop

how to change the value of an element in an array c++

Video Lecture full of animations: Don’t Miss it for better Understanding

How it will works?

Now, let’s see one another example;

Program of the insert of the element in an array at a specific position in C

#include <stdio.h> 
int main()
{
int array[100], position, c, n, value;
printf("Enter number of elements in array\n");
scanf("%d", &n);
printf("Enter %d elements\n", n);
for (c = 0; c < n; c++)
scanf("%d", &array[c]);
printf("Enter the location where you wish to insert an element\n");
scanf("%d", &position);
printf("Enter the value to insert\n");
scanf("%d", &value); 
for (c = n - 1; c >= position - 1; c--)
array[c+1] = array[c];
array[position-1] = value;
printf("Resultant array is\n");
for (c = 0; c <= n; c++)
printf("%d\n", array[c]);
return 0;
}

#include <stdio.h>

int main()

{

int array[100], position, c, n, value;

printf("Enter number of elements in array\n");

scanf("%d", &n);

printf("Enter %d elements\n", n);

for (c = 0; c < n; c++)

scanf("%d", &array[c]);

printf("Enter the location where you wish to insert an element\n");

scanf("%d", &position);

printf("Enter the value to insert\n");

scanf("%d", &value);

for (c = n - 1; c >= position - 1; c--)

array[c+1] = array[c];

array[position-1] = value;

printf("Resultant array is\n");

for (c = 0; c <= n; c++)

printf("%d\n", array[c]);

return 0;

}

Output

Figure: insert of an element in an array at any specific position program in CPP, C Plus Plus, c c++ flowchart.

C Program to insert an element into the beginning of array

Algorithm of insert an element into the beginning of array

begin

IF NUMBER = MAXIMUM, return
ELSE
NUMBER = NUMBER + 1

For All Elements in A
Move to next adjacent location

T4TUTORIALS[FIRST] = New_Element

end

#include <iostream>
#include <stdio.h>
#define MAXIMUM 5
int main() {
int T4Tutorials[MAXIMUM] = {6, 2, 1, 7};
int N = 4;        // number of elements in array
int i = 0;        // loop variable
int value = 1;    // new data element to be stored in array
// print array before insertion
printf("Printing array before insertion -\n");
for(i = 0; i < N; i++) {
printf("T4Tutorials[%d] = %d \n", i, T4Tutorials[i]);
}
// now shift rest of the elements downwards   
for(i = N; i >= 0; i--) {
T4Tutorials[i+1] = T4Tutorials[i];
}
// add new element at first position
T4Tutorials[0] = value;
// increase N to reflect number of elements
N++;
// print to confirm
printf("Printing array after insertion -\n");
for(i = 0; i < N; i++) {
printf("T4Tutorials[%d] = %d\n", i, T4Tutorials[i]);
}
}

#include <iostream>

#include <stdio.h>

#define MAXIMUM 5

int main() {

int T4Tutorials[MAXIMUM] = {6, 2, 1, 7};

int N = 4; // number of elements in array

int i = 0; // loop variable

int value = 1; // new data element to be stored in array

// print array before insertion

printf("Printing array before insertion -\n");

for(i = 0; i < N; i++) {

printf("T4Tutorials[%d] = %d \n", i, T4Tutorials[i]);

}

// now shift rest of the elements downwards

for(i = N; i >= 0; i--) {

T4Tutorials[i+1] = T4Tutorials[i];

}

// add new element at first position

T4Tutorials[0] = value;

// increase N to reflect number of elements

N++;

// print to confirm

printf("Printing array after insertion -\n");

for(i = 0; i < N; i++) {

printf("T4Tutorials[%d] = %d\n", i, T4Tutorials[i]);

}

Output

Printing array before insertion −
T4Tutorials[0] = 6
T4Tutorials[1] = 2
T4Tutorials[2] = 1
T4Tutorials[3] = 7
Printing array after insertion −
T4Tutorials[0] = 0
T4Tutorials[1] = 6
T4Tutorials[2] = 2
T4Tutorials[3] = 1
T4Tutorials[4] = 7

C Program to insert an element Before the Given Index of an Array

Algorithm of insert an element Before the Given Index of an Array

begin

IF NUMBER = MAXIMUM, return
ELSE
NUMBER = NUMBER + 1
SEEK Location index
For All Elements from T4TUTORIALS[index – 1] to T4TUTORIALS [NUMBER]
Move to next adjacent location
T4TUTORIALS [index – 1] = New_Element

end

#include <iostream>
#include <stdio.h>
#define MAXIMUM 5
int main() {
int T4Tutorials[MAXIMUM] = {6, 2, 1, 7};
int N = 4;        
// number of elements in array
int i = 0;        
// loop variable
int index = 3;    
// index location before which value will be inserted
int value = 9;    
// new data element to be inserted
// print array before insertion
printf("Printing array before insertion -\n");
for(i = 0; i < N; i++) {
printf("T4Tutorials[%d] = %d \n", i, T4Tutorials[i]);
}
// now shift rest of the elements downwards   
for(i = N; i >= index + 1; i--) {
T4Tutorials[i + 1] = T4Tutorials[i];
}
// add new element at first position
T4Tutorials[index + 1] = value;
// increase N to reflect number of elements
N++;
// print to confirm
printf("Printing array after insertion -\n");
for(i = 0; i < N; i++) {
printf("T4Tutorials[%d] = %d\n", i, T4Tutorials[i]);
}
}

#include <iostream>

#include <stdio.h>

#define MAXIMUM 5

int main() {

int T4Tutorials[MAXIMUM] = {6, 2, 1, 7};

int N = 4;

// number of elements in array

int i = 0;

// loop variable

int index = 3;

// index location before which value will be inserted

int value = 9;

// new data element to be inserted

// print array before insertion

printf("Printing array before insertion -\n");

for(i = 0; i < N; i++) {

printf("T4Tutorials[%d] = %d \n", i, T4Tutorials[i]);

}

// now shift rest of the elements downwards

for(i = N; i >= index + 1; i--) {

T4Tutorials[i + 1] = T4Tutorials[i];

}

// add new element at first position

T4Tutorials[index + 1] = value;

// increase N to reflect number of elements

N++;

// print to confirm

printf("Printing array after insertion -\n");

for(i = 0; i < N; i++) {

printf("T4Tutorials[%d] = %d\n", i, T4Tutorials[i]);

}

Output

Printing array before insertion −
T4Tutorials[0] = 6
T4Tutorials[1] = 2
T4Tutorials[2] = 1
T4Tutorials[3] = 7
Printing array after insertion −
T4Tutorials[0] = 6
T4Tutorials[1] = 2
T4Tutorials[2] = 1
T4Tutorials[3] = 7
T4Tutorials[4] = 9

Topic Covered

Program of the insert of an element in an array at a specific position in C++ (C Plus Plus, CPP) and C with the flowchart

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