type array_name[SIZE];
int a[10];
float x[99];
char c[5]; array_name[element_index];
int a[10]; // declaring an array with 10 integers
a[0] = 1; // assigning the value 1 to the first element
cout << a[9] << endl; // printing the value of the last elementWrite a program that will check whether two arrays are equal or not. Display the result of the comparison on the screen. The maximum size of the arrays is 100.
#include<iostream>
using namespace std;
int main() {
int n1, n2, element, i;
int a[100], b[100];
cout << "Size of the first array: " << endl;;
cin >> n1;
cout << "Size of the second array: " << endl;
cin >> n2;
if (n1 != n2) {
cout << "Arrays are not equal!" << endl;
} else {
cout << "Elements of the first array:" << endl;
for (i = 0; i < n1; i++) {
cout << "a[" << i << "] = ";
cin >> a[i];
}
cout << "Elements of the second array:" << endl;
for (i = 0; i < n2; i++) {
cout << "b[" << i << "] = ";
cin >> b[i];
}
// check if arrays are equal:
for (i = 0; i < n1; i++) {
if (a[i] != b[i]) {
break;
}
}
if (i == n1) {
cout << "Arrays are equal!" << endl;
} else {
cout << "Arrays are not equal!" << endl;
}
}
return 0;
}Write a program that, for an array whose elements are entered from the keyboard, calculates the sum of even elements, the sum of odd elements, and the ratio between the number of even and odd elements. Print the results to the screen.
Example:
For the array: 3 2 7 6 2 5 1, the output should be:
Sum even: 8
Sum odd: 16
Rel: 0.75#include<iostream>
using namespace std;
int main() {
int n, a[100], n_odd = 0, n_even = 0, sum_odd = 0, sum_even = 0;
cin >> n;
for (int i = 0; i < n; i++)
cin >> a[i];
for (int i = 0; i < n; i++) {
if (a[i] % 2) {
n_odd++;
sum_odd += a[i];
} else {
n_even++;
sum_even += a[i];
}
}
cout << "Sum even: " << sum_even << endl;
cout << "Sum odd: " << sum_odd << endl;
cout << "Rel: " << (float)n_even / n_odd << endl;
return 0;
}Write a program that calculates the scalar product of two vectors with n coordinates. The number of coordinates n, as well as the coordinates of the vectors, are entered from the standard input. Print the result to the screen.
#include<iostream>
using namespace std;
int main() {
int a[100], b[100], n, scalar = 0;
cin >> n;
for (int i = 0; i < n; i++){
cin >> a[i];
}
for (int i = 0; i < n; i++){
cin >> b[i];
}
for (int i = 0; i < n; i++){
scalar += a[i] * b[i];
}
cout << "The scalar product is: " << scalar << endl;
return 0;
}Write a program that checks if a given array of n elements, read from the standard input, is strictly increasing, strictly decreasing, or neither strictly increasing nor strictly decreasing. Print the result to the screen.
#include<iostream>
using namespace std;
int main() {
int n, element, a[100];
short increasing = 1, decreasing = 1;
cin >> n;
for (int i = 0; i < n; i++){
cin >> a[i];
}
for (int i = 0; i < n - 1; i++) {
if (a[i] >= a[i + 1]) {
increasing = 0;
break;
}
}
for (int i = 0; i < n - 1; i++) {
if (a[i] <= a[i + 1]) {
decreasing = 0;
break;
}
}
if (!decreasing && !increasing) {
cout << "The array is neither strictly increasing nor strictly decreasing" << endl;
} else if (decreasing) {
cout << "The array is strictly decreasing" << endl;
} else if (increasing) {
cout << "The array is strictly increasing" << endl;
}
return 0;
}Write a program to rotate the elements of an array one place to the right. Finally, print the rotated array to the screen. Read the elements of the array from the standard input.
#include<iostream>
using namespace std;
int main() {
int n, temp;
int a[100];
cout << "Size of the array: ";
cin >> n;
for(int i = 0; i < n; i++) {
cin >> a[i];
}
temp = a[n-1];
for(int i = n - 1; i > 0; i--) {
a[i] = a[i-1];
}
a[0] = temp;
for(int i = 0; i < n; i++) {
cout << a[i] << " ";
}
return 0;
}Write a program to rotate the elements of an array m places to the right. Finally, print the rotated array
to the screen. Read the elements of the array and the number of rotations from the standard input.
#include<iostream>
using namespace std;
int main() {
int n, temp, m;
int a[100];
cout << "Size of the array: ";
cin >> n;
cout << "Number of rotations: ";
cin >> m;
for(int i = 0; i < n; i++) {
cin >> a[i];
}
for(int i = 0; i < n; i++) {
cout << a[i] << " ";
}
cout << endl;
for(int j = 0; j < m; j++) {
temp = a[n-1];
for(int i = n - 1; i > 0; i--) {
a[i] = a[i-1];
}
a[0] = temp;
}
for(int i = 0; i < n; i++) {
cout << a[i] << " ";
}
return 0;
}Write a program that removes duplicates from an array. Finally, print the obtained array to the screen. Read the elements of the array from the standard input.
#include<iostream>
using namespace std;
int main() {
int a[100], n, j, k, deleted = 0;
cin >> n;
for (int i = 0; i < n; i++){
cin >> a[i];
}
for (int i = 0; i < n - deleted; i++) {
for (int j = i + 1; j < n - deleted; j++) {
if (a[i] == a[j]) {
for (int k = j; k < n - 1 - deleted; k++) {
a[k] = a[k + 1];
}
deleted++;
--j;
}
}
}
n -= deleted;
for (int i = 0; i < n; i++) {
cout << a[i] << " ";
}
return 0;
}