View Compilation Error

0_0_14022470_28028.cpp: In function 'int main()':
0_0_14022470_28028.cpp:30:29: error: 'strlen' was not declared in this scope
   for(int i = 0; i < strlen())
                             ^
0_0_14022470_28028.cpp:30:30: error: expected ';' before ')' token
   for(int i = 0; i < strlen())
                              ^
0_0_14022470_28028.cpp:31:2: error: expected primary-expression before '}' token
  }
  ^