Answer to Question #287804 in C++ for Jana

Question

Create a list which contains integer elements and then perform operations

1.insert

2.delete 

3.display

4.search 

6. display the prime numbers

7. calculate the sum of the elements

8. display the elements in the reverse order

9.exit 

Answer 1

#include<stdio.h>




int main(){
	int i=0;
	int index=0;
	int size=0;
	int oddSum=0;
	int target=0;
	int elements[1000];




	int ch=-1;


	while(ch!=8){
		printf("1. Insert\n");
		printf("2. Delete\n");
		printf("3. Display\n");
		printf("4. Search\n");
		printf("5. Display the multiple of two\n");
		printf("6. Calculate the sum of odd elements\n");
		printf("7. Display the elements in the reverse order\n");
		printf("8. Exit\n");	
		scanf("%d",&ch);
		switch(ch){
		case 1:
			{
				printf("Enter element: ");
				scanf("%d",&elements[size]);
				size++;
			}
			break;
		case 2:
			{
				printf("Enter index of element to delete [0,%d]: ",(size-1));
				scanf("%d",&index);
				for(i=index;i<size-1;i++){
					elements[i]=elements[i+1];
				}
				size--;
				printf("\nThe element has been deleted.\n");
			}
			break;
		case 3:
			{
				printf("All elements:\n");
				for(i=0; i<size; i++){
					printf("%d ",elements[i]);
				}
				printf("\n");
			}
			break;
		case 4:
			{
				printf("Enter the element to search: ");
				scanf("%d",&target);
				for(i=0; i<size; i++){
					if(target==elements[i]){
						printf("Index %d = %d\n",i,target);
					}
				}
			}
			break;
		case 5:
			{
				for(i=0; i<size; i++){
					printf("%d * 2 = %d\n",elements[i],elements[i]*2);
				}
				printf("\n");
			}
			break;
		case 6:
			{
				for(i=0; i<size; i++){
					if(elements[i]%2!=0){
						oddSum+=elements[i];
					}
				}
				printf("The sum of odd numbers are: %d\n",oddSum);
			}
			break;
		case 7:
			{
				printf("All elements in the reverse order:\n");
				for(i=size-1; i>=0; i--){
					printf("%d ",elements[i]);
				}
				printf("\n");
			}
			break;
		case 8:
			{
				//exit
			}
			break;
		default:
			{
				printf("Wrong selection.\n");
			}
			break;


		}
	}
	return 0;
}