C Program For Insertion And Deletion

C Program For Insertion And Deletion How To Write A C Program For Deletion And Insertion? 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How To Implement Static Variable In C? How To Implement Queue in C? How To Implement Circular Queue in C? What is Embedded C programming and how is it different? How To Write A C Program For Deletion And Insertion? Last updated on May 07,2020 5.7K Views edureka Bookmark How To Write A C Program For Deletion And Insertion? This article on C Program For Deletion And Insertion will introduce you to basics of deleting and inserting elements in a C array. Following pointers will be covered in this article,Searching an Element in an ArrayC Function to Search an Element in an ArrayC Program to Search an Element in an ArrayInserting An Element in An ArrayC function to Insert An Element in An ArrayC Program to Insert An Element In An ArrayDeleting An Element From An ArrayC Function to Delete An Element From An ArrayC Program to Delete An Element From An ArraySo let us get started thenC Program For Deletion A nd InsertionArrays are the fundamentals of any programming language. To master any programming language, you need to be proficient with arrays. In this blog, we will learn how to perform basic operations such as insert, delete search in an array using C programming language.Lets first understand how to search a given element in an array.Searching an Element in an ArrayTo search an element in an array you need to traverse through the array using loop and search for the given element.So let us continue with this C Program For Deletion And Insertion article,C Function to Search an Element in an Array int findElement(int array[], int size, int keyToBeSearched) { int i; // Finding returning the position of the element for (i = 0; i size; i++) if (array[i] == keyToBeSearched) return i; return - 1; } So let us continue with this C Program For Deletion And Insertion article,C Program to Search an Element in an Array #includestdio.h // Function to find the element for deletion // where array[] is the array from which element needs to be deleted // size is the size of the array // keyToFind is the element to be deleted from the array int findElement(int array[], int size, int keyToBeSearched) { int i; // Finding returning the position of the element for (i = 0; i size; i++) if (array[i] == keyToBeSearched) return i; return - 1; } // Main Function int main() { int array[] = { 31, 27, 3, 54, 67, 31 }; int size = sizeof(array) / sizeof(array[0]); int keyToBeSearched = 67; // Calling the function to delete an element from the array int pos = findElement(array, size, keyToBeSearched); if(pos==-1){ printf(n Element %d not found, keyToBeSearched); } else{ printf(n Position of %d: %d, keyToBeSearched ,pos+1); } return 0; } OutputSo let us continue with this C Program For Deletion And Insertion article,Inserting An Element in An ArrayInserting an element in an unsorted array is faster as compared to sorted array. This is because in an unsorted array, you do not have to worry about the new position of the element. The position of the new element is the last position in the array.You need to check the total length of the array. If the array isnt full, you can add the element at the last place.Lets look at the C function to insert an element in an array.C function to Insert An Element in An Array //Function to insert an element in an array. //arr[] = array, elements = number of elements present in the array //keyToBeInserted = element to be inserted in the array // size of the array int insertElement(int arr[], int elements, int keyToBeInserted, int size) { // Check if the capacity of the array is already full if (elements = size) return elements; //If not then the element is inserted at the last index //and the new array size is returned arr[elements] = keyToBeInserted; return (elements + 1); } So let us continue with this C Program For Deletion And Insertion article,C Program to Insert An Element In An ArrayExample #includestdio.h //Function to insert an element in an array. //arr[] = array, elements = number of elements present in the array //keyToBeInserted = element to be inserted in the array // size of the array int insertElement(int arr[], int elements, int keyToBeInserted, int size) { // Check if the capacity of the array is already full if (elements = size) return elements; //If not then the element is inserted at the last index //and the new array size is returned arr[elements] = keyToBeInserted; return (elements + 1); } // Main Function int main() { int array[20] = { 31, 27, 3, 54, 67, 31 }; int size = sizeof(array) / sizeof(array[0]); int elements = 6; int i, keyToBeInserted = 32; printf(n Before Insertion: ); for (i = 0; i elements; i++) printf(%d , array[i]); // Calling the function to insert the element in the array elements = insertElement(array, elements, keyToBeInserted, size); printf(n After Insertion: ); for (i = 0; i elements; i++) printf(%d ,array[i]); return 0; } Output:Next we will understand how to delete an element from an array.Deleting An Element From An ArrayTo delete an element in an array, we need to first search the element. Then we need to delete the element and shift the rest of the elements to the left.Lets look at the deletion function in C.C Function to Delete An Element From An Array // Function to delete an element // where array[] is the array from which element needs to be deleted // size is the size of the array // keyToBeDeleted is the element to be deleted from the array int deleteElement(int array[], int size, int keyToBeDeleted) { // Calling findElement function to get the position of the element which needs to be deleted int pos = findElement(array, size, keyToBeDeleted); // If element is not found then it prints Element not found if (pos == - 1) { printf(Element not found); return size; } // Otherwise it deletes the element moves rest of the element by one position int i; for (i = pos; i size - 1; i++) array[i] = array[i + 1]; return size - 1; } So let us continue with this C Program For Deletion And Insertion article,C Program to Delete An Element From An ArrayExample #includestdio.h // Function to delete an element // where array[] is the array from which element needs to be deleted // size is the size of the array // keyToBeDeleted is the element to be deleted from the array int deleteElement(int array[], int size, int keyToBeDeleted) { // Calling findElement function to get the position of the element which needs to be deleted int pos = findElement(array, size, keyToBeDeleted); // If element is not found then it prints Element not found if (pos == - 1) { printf(Element not found); return size; } // Otherwise it deletes the element moves rest of the element by one position int i; for (i = pos; i size - 1; i++) array[i] = array[i + 1]; return size - 1; } // Function to find the element for deletion int findElement(int array[], int size, int keyToBeDeleted) { int i; // Finding returning the position of the element for (i = 0; i size; i++) if (array[i] == keyToBeDeleted) return i; return - 1; } // Main Function int main() { int array[] = { 31, 27, 3, 54, 67, 31 }; int size = sizeof(array) / sizeof(array[0]); int i, keyToBeDeleted = 67; printf(n Before Deletion: ); for (i = 0; i size; i++) printf(%d , array[i]); // Calling the function to delete an element from the array size = deleteElement(array, size, keyToBeDeleted); printf(n After Deletion: ); for (i = 0; i size; i++) printf(%d ,array[i]); return 0; } Output:Now after going through the above programs you would have understood how to perform basic array operations in C language. 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