View Compilation Error

0_0_28295615_14248.cpp: In function 'void init()':
0_0_28295615_14248.cpp:14:2: error: expected ';' before 'for'
  for(int i=4;i<=20;i++)
  ^
0_0_28295615_14248.cpp:14:14: error: 'i' was not declared in this scope
  for(int i=4;i<=20;i++)
              ^