c# - For loop pattern -

i have assignment college, anyway need make pattern output:

* ** *** **** ***** ****** ******* ******** ********* ********** 

here's code:

using system; using system.collections.generic; using system.linq; using system.text; using system.threading.tasks;  namespace problem_11 {     class program     {         static void main(string[] args)         {             int i;             (i = 1; <= 10; i++)             {                 (string o = "*";); //nested loop                 {                     console.write(o);                 }                 console.write("\n");             }             console.readline();         }      } } 

error 1 assignment, call, increment, decrement, await, , new object expressions can used statement

error 2 invalid expression term ')'

error 3 invalid expression term '{'

error 4 ) expected

error 5 { expected

try code

for (int = 0; < 10; i++)         {             (int j = 0; j <=i; j++)             {                 console.write("*");             }             console.writeline();         }