Hello, algorithm in C++ language of this problem has given below. If any question(s) then feel free to ask in comments!
Good luck!
#include <bits/stdc++.h>
int main(int argc, char* argv[]) {
for(int i=1;i<=7;i++) {
int x=2;
while(x!=2*i) {
std::cout << x << " ";
x+=2;
}
std::cout << std::endl;
}
return 0;
}