View Compilation Error

0_0_15875164_17401.cpp: In function 'int main()':
0_0_15875164_17401.cpp:6:14: error: expected ';' before ')' token
  for(n>=0;n--)
              ^
0_0_15875164_17401.cpp:9:11: error: 'whlile' was not declared in this scope
 whlile(a--) 
           ^