nested loops and start or its condition with parent loop

[mpahlevanzadeh]

I search to stable formula When i see nested loops, i can say their answer quickly. such as:

for (i = 0; i< 5; i++)
   for (j = i ; j < 10; j++)
       cout "C"; //When nested loop start with variable of parent loop 

And

for (i = 0; i< 5; i++)
   for (j = 0 ; j < i; j++)
       cout "C"; //When nested loop start with fixed number and less or gather than of parent loop 

[Ivan Sidarau]

And what your Q is?