View Compilation Error

0_0_15270901_2499.cpp:155:2: error: expected unqualified-id before 'for'
  for(int i=1;i<=len;i++){
  ^
0_0_15270901_2499.cpp:155:14: error: 'i' does not name a type
  for(int i=1;i<=len;i++){
              ^
0_0_15270901_2499.cpp:155:21: error: 'i' does not name a type
  for(int i=1;i<=len;i++){
                     ^
0_0_15270901_2499.cpp:158:1: error: expected declaration before '}' token
 }
 ^