[SOLVED] I Need Help With This C++ Problem

Question

I want to make Pyramid with this pattern, so it will look like this:
1
1 3
1 3 6
1 3 6 10
1 3 6 10 15

And so on...

This is my code so far:

#include <iostream>

Using namespace std;

Int main(){
Int deret;
For (int i=1; i<=5; i++){
For (int n=1; n<=i ; n++){
deret = i*(i+1)/2;
Cout<<deret;
}
Cout << endl;
}
return 0;
}

PS: Happy New Year, Thanks for the help.

Answer 1

Shouldn't there be number 10 at the 4th row? if so, this might work

#include <iostream>

int main()
{
int deret {5};
for (int i {1}; i <= deret; i++)
{
for (int j {0}, n {1}; n <= i ; n++)
{
std::cout << (j += n) << ' ';
}
std::cout << '\n';
}
return 0;
}

Answer 2

deret = n*(n+1)/2;

Answer 3

Ipang Yes, There's should be number 10 at the 4th row. I forgot to put it and I'm gonna put it so everyone can comprehend your code and the problem set. Thanks for the answer.

Answer 4

Simba Thanks! Appreciate it.

Answer 5

#include <iostream>

int main()
{
int deret {5};
for (int i {1}; i <= deret; i++)
{
for (int j {0}, n {1}; n <= i ; n++)
{
std::cout << (j += n) << ' ';
}
std::cout << '\n';
}
return 0;
}

Answer 6

Try this one , its working very simple logic

#include <iostream>
using namespace std;
int main() {
int n; cin >> n;
int val = 0;
for (int i = 1; i <= n; i++) {
val = 0;
for (int j = 1; j <= i; j++) {
val = val + j;
cout << val << " ";
}
cout << endl;
}
return 0;
}