In this program, You will learn how to find sum of prime numbers in an array in C++.

```
List is: 2 3 4 5 6 7 8 9 10 12 14 16 18 20 22
Sum of prime number is : 2 + 3 + 5 + 7 = 17
```

```
#include<iostream>
using namespace std;
int main() {
int arr[10], i, s, j, p, sum = 0;
cout << "Enter size of an array:";
cin>>s;
cout << "Enter array elements:";
for (i = 0; i < s; i++) {
cin >> arr[i];
}
for (i = 0; i < s; i++) {
j = 2;
p = 1;
while (j < arr[i]) {
if (arr[i] % j == 0) {
p = 0;
break;
}
j++;
}
if (p == 1) {
sum = sum + arr[i];
}
}
cout << "Sum of prime numbers is:" << sum;
return 0;
}
```

```
Enter size of an array:5
Enter array elements:2 3 4 5 6
Sum of prime numbers is:10
```