Answer:
In C++, you can declare an 8-element integer array Y as follows:
int Y[8];
To read data from the keyboard into the array, you can use a for loop and the cin function:
for (int i = 0; i < 8; i++) {
for (int i = 0; i < 8; i++) { cin >> Y[i];
for (int i = 0; i < 8; i++) { cin >> Y[i];}
To calculate the sum of elements greater than zero, you can use another for loop to iterate through the array and add the values greater than zero to a variable:
int sum = 0;
int sum = 0;for (int i = 0; i < 8; i++) {
int sum = 0;for (int i = 0; i < 8; i++) { if (Y[i] > 0) {
int sum = 0;for (int i = 0; i < 8; i++) { if (Y[i] > 0) { sum += Y[i];
int sum = 0;for (int i = 0; i < 8; i++) { if (Y[i] > 0) { sum += Y[i]; }
int sum = 0;for (int i = 0; i < 8; i++) { if (Y[i] > 0) { sum += Y[i]; }}
To calculate the arithmetic mean of elements less than zero, you can use another for loop to iterate through the array and add the values less than zero to a variable, and divide the total by the number of elements.
int count = 0;
int count = 0;int sum = 0;
int count = 0;int sum = 0;for (int i = 0; i < 8; i++) {
int count = 0;int sum = 0;for (int i = 0; i < 8; i++) { if (Y[i] < 0) {
int count = 0;int sum = 0;for (int i = 0; i < 8; i++) { if (Y[i] < 0) { sum += Y[i];
int count = 0;int sum = 0;for (int i = 0; i < 8; i++) { if (Y[i] < 0) { sum += Y[i]; count++;
int count = 0;int sum = 0;for (int i = 0; i < 8; i++) { if (Y[i] < 0) { sum += Y[i]; count++; }
int count = 0;int sum = 0;for (int i = 0; i < 8; i++) { if (Y[i] < 0) { sum += Y[i]; count++; }}
int count = 0;int sum = 0;for (int i = 0; i < 8; i++) { if (Y[i] < 0) { sum += Y[i]; count++; }}double mean = sum / count;
It's important to note that you should make sure that the count variable doesn't equal zero, otherwise you will divide by zero which will result in an error.