C Program to Delete Element from Array

#include<stdio.h>
#include<stdlib.h>
#include<conio.h>
int arr[100],size;
void del_beg();
void del_pos();
void del_last();
void del();
void display();
int main(){
        int ch;
        printf("Enter the size of the array : ");
        scanf("%d",&size);
        printf("Enter the array elements one by one.....\n");
        for(int i=0;i<size;i++){
                scanf("%d",&arr[i]);
        }
                while(1){
                printf("\n\t\t1. Deletion at beginning\n\t\t2. Deletion at a given possition\n\t\t3. Deletion at last\n\t\t4. Delete by number\n\t\t5. Display\n\t\t6. Exit\n");
                scanf("%d",&ch);
                switch(ch){
                        case 1:
                                del_beg();
                                break;
                        case 2:
                                del_pos();
                                break;
                        case 3:
                                del_last();
                        break;
                        case 4:
                                del();
                                break;
                        case 5:
                                display();
                                break;
                        case 6:
                                exit(0);
                                break;
                        default:
                                printf("Invalid Choice.....Try Again.....\n");
                }
        }
}
void del_beg(){
        printf("The fisrt element %d of the array is deleted.\n",arr[0]);
        for(int i=0;i<size;i++){
                arr[i]=arr[i+1];
        }
        size--;
        printf("Array After deletion.....\n");
        for(int i=0;i<size;i++){
                printf("%d\t",arr[i]);
        }
        printf("\n");
}
void del_pos(){
        int pos;
        printf("Enter the location which element you want to delete : ");
        scanf("%d",&pos);
        if(pos<=size){
                printf("The element at %d possition i.e. %d is deleted.\n",pos,arr[pos-1]);
                for(int i=pos-1;i<=size;i++){
                        arr[i]=arr[i+1];
                }
                size--;
                printf("Array After deletion.....\n");
                for(int i=0;i<size;i++){
                        printf("%d\t",arr[i]);
                }
                printf("\n");
        }
        else{
                printf("Out of array range.\n");
        }
}
void del_last(){
        printf("The last element i.e. %d is deleted.\n",arr[size-1]);
        for(int i=size;i<size+1;i++){
                arr[i]=arr[i+1];
        }
        size--;
        printf("Array After deletion.....\n");
        for(int i=0;i<size;i++){
                printf("%d\t",arr[i]);
        }
        printf("\n");
}
void del(){
        int item,x=0,flag=0;
        printf("Enter item to delete : ");
        scanf("%d",&item);
        for(int i=0;i<size;i++){
                if(arr[i]==item){
                        x=i;
                        flag=1;
                        break;
                }
                else{
                        flag=0;
                }
        }
        if(flag==1){
                printf("The element %d is deleted.\n",item);
                for(int i=x;i<=size;i++){
                        arr[i]=arr[i+1];
                }
                size--;
                printf("Array After deletion.....\n");
                for(int i=0;i<size;i++){
                        printf("%d\t",arr[i]);
                }
                printf("\n");
        }
        else{
                printf("The entered element %d is not found in array list.\n",item);
        }
}
void display(){
        printf("The elements of array.....\n");
        for(int i=0;i<size;i++){
                printf("%d\t",arr[i]);
        }
        printf("\n");
}

Output

Deleting First Element

Deleting Element from a given possition

Deleting Last Element

Deleting Element by Number