For Loop (1 Viewer)

[MrTanman]

May someone please interpret this For Loop script for me?
I want to know how t equals 20.

t = 0;
for (i = 1 to 3) {
             for (j = 0 to i) {
                      t = t + i;
                      next j;
             }
             next i;
}
display t;

Thanks

 

[alcalder]

t = 0
i = 1
j = 0 , t = 1
j = 1, t = 2
i = 2
j = 0, t = 4
j = 1, t = 6
j = 2, t = 8
i = 3
j = 0, t = 11
j = 1, t = 14
j = 2, t = 17
j = 3, t = 20

Remember, t = t + i not t = t+1