View Compilation Error

0_0_18804878_3473.cpp: In function 'void transfer(int*, int*, int)':
0_0_18804878_3473.cpp:20:29: error: 'i' was not declared in this scope
  forn(j,need)if(src[j]>=0&&(i==0||src[i]!=src[i-1])){
                             ^