- C Programming Examples
- C Programming Examples
- C Print Hello World
- C Get Input from User
- C Print Integer
- C Add Two Numbers
- C Add Subtract Multiply Divide
- C Add n Numbers
- C Area Perimeter of Square
- C Area Perimeter of Rectangle
- C Area Circum of Circle
- C Fahrenheit to Celsius
- C Celsius to Fahrenheit
- C Inches to Centimeters
- C Kilogram to Gram
- C Reverse a Number
- C Swap Two Numbers
- C Interchange Numbers
- C Print ASCII Value
- C Print Fibonacci Series
- C Check Palindrome or Not
- C Check Armstrong or Not
- C Find Armstrong Numbers
- C Find nCr and nPr
- C Find Profit Loss
- C Sum of their Square
- C First & Last Digit Sum
- C Sum of All Digit
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- C Print Total Digit in Number
- C Check Perfect Number
- C Find Basic Gross Salary
- C Round Number to Integer
- C Print Series upto n Term
- C Find Factors of Number
- C if-else & Loop Programs
- C Check Even or Odd
- C Check Prime or Not
- C Check Alphabet or Not
- C Check Vowel or Not
- C Check Leap Year or Not
- C Is Reverse Equal Original
- C Make Calculator
- C Add Digits of Number
- Count Positive Negative Zero
- C Largest of Two Numbers
- C Largest of Three Numbers
- C Smallest of Two Numbers
- C Smallest of Three Numbers
- C Find Factorial of Number
- C Find LCM & HCF
- C Find LCM of n Numbers
- C Find HCF of n Numbers
- C Find Arithmetic Mean
- C Find Average, Percentage
- C Find Student Grade
- C Print Table of Number
- C Print Prime Numbers
- C Find Discount Purchase
- C Calculate Parcel Charge
- C Calculate Wage of Labor
- C Print Phone Bill
- C Conversion programs
- C Decimal to Binary
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- C Decimal to Hexadecimal
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- C Count Even Odd
- C Array Element at Even
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- C Print Even Array Elements
- C Print Odd Array Elements
- C Sum/Product of Even/Odd
- C Reverse an Array
- C Insert Element in Array
- C Delete Element from Array
- C Merge Two Arrays
- C Bubble Sort
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- C Insertion Sort
- C Print Common Elements
- C 2D Array Programs
- C Add Two Matrices
- C Subtract Two Matrices
- C Transpose a Matrix
- C Multiply Two Matrices
- C Sum All Matrix Elements
- C Largest Element in Matrix
- C Print Row Column Total
- C 3D Array Programs
- C String Programs
- C Print String
- C Find Length of String
- C Compare Two String
- C Copy a String
- C Concatenate String
- C Reverse a String
- C Count Vowels Consonants
- C Replace Vowel in String
- C Delete Vowels from String
- C Delete Word from String
- C Frequency of Character
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- C Remove Spaces from String
- C Sort a String
- C Sort String in Alphabetical
- C Sort Words in Ascending
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- C Uppercase to Lowercase
- C Lowercase to Uppercase
- C Swap Two Strings
- C Check Anagram or Not
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- C Print Number in Words
- C Print Successive Character
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- C Delete a File
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- Generate Random Numbers
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- C Pass Array to Function
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C Program to Insert an Element in an Array
In this article, you will learn and get code about inserting an element in an array in following ways:
- Inserts Element at the End of an Array
- Inserts Element at a Particular Position
Let's first create a program, that asks from user to enter 5 array elements and an element which has to be insert at the end of array as shown in the program given below:
#include<stdio.h> #include<conio.h> int main() { int arr[10], i, element; printf("Enter 5 Array Elements: "); for(i=0; i<5; i++) scanf("%d", &arr[i]); printf("\nEnter Element to Insert: "); scanf("%d", &element); arr[i] = element; printf("\nThe New Array is:\n"); for(i=0; i<6; i++) printf("%d ", arr[i]); getch(); return 0; }
This program was build and run under Code::Blocks IDE. Here is its sample run:
Enter any 5 numbers as 5 array elements say 10, 20, 30, 40, 50 and then enter an element say 60 to insert at the end of array. Here is the sample run:
The block of code given below:
for(i=0; i<5; i++) scanf("%d", &arr[i]);
is used to receive the input (as 5 array elements) from user. When the value of i becomes 5, means the condition of for loop evaluates to be false, because 5 is not less than 5. So using the statement,
arr[i] = element;
Value of element gets initialized to arr[5]. Because i's last value is 5. Therefore the element gets stored at last index or at the end of given array.
Insert Element at a Particular Position
This program inserts element at a particular position. In this program, user is allowed to define the size for an array.
#include<stdio.h> #include<conio.h> int main() { int arr[50], i, element, pos, size; printf("How many Element to Store in Array ? "); scanf("%d", &size); printf("Enter %d Array Elements: ", size); for(i=0; i<size; i++) scanf("%d", &arr[i]); printf("\nEnter Element to Insert: "); scanf("%d", &element); printf("\nAt what position ? "); scanf("%d", &pos); for(i=size; i>=pos; i--) arr[i] = arr[i-1]; arr[i] = element; size++; printf("\nThe New Array is:\n"); for(i=0; i<size; i++) printf("%d ", arr[i]); getch(); return 0; }
Let's suppose user has entered:
- Array Size as 10
- Array Elements as 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
- Element to Insert as 60
- Position as 6
Then new array looks like, 1, 2, 3, 4, 5, 60, 6, 7, 8, 9, 10. Here is its sample run:
As you can see from sample run given above, elements from the given position (where the new element gets inserted), gets shifted one index forward.
Based on the user input given above, the dry run of this program goes like:
- 10 elements 1, 2, 3, ..., 10 gets initialized to arr[0], arr[1], arr[2], ..., arr[9]
- Now the value of i is 10
- 60 (element to insert) gets initialized to element variable
- 6 (position) gets initialized to pos
- Now shifts all the element after the given position (6), one index forward, starts from last element. Therefore,
- arr[i-1] or arr[10-1] or arr[9] or 10 goes to arr[i] or arr[10]
- the value of i gets decremented and becomes 9. Because 9 is greater than the value of pos (6). Therefore again
- arr[i-1] or arr[9-1] or arr[8] or 9 goes to arr[i] or arr[9]
- and so on, until the value of i becomes less than the value of pos (6)
- In this way, 10, 9, 8, 7, 6 goes to arr[10], arr[9], arr[8], arr[7], arr[6]
- And the value of i right now is 5
- Now initialize the element (to insert) 60 at arr[i] or arr[5]
- Because, indexing starts from 0, therefore the element at 5th index is referred as 6th position element
- Because one extra element gets inserted in the given array. Therefore increment the value of size by 1
- Finally print the array
Same Program in Other Languages
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