View Compilation Error

0_0_25448635_25036.cpp: In function 'int main()':
0_0_25448635_25036.cpp:14:3: error: 'len' was not declared in this scope
   len=strlen(s);
   ^
0_0_25448635_25036.cpp:28:8: error: 't' was not declared in this scope
   if(i<t-1)cout<<"\n";
        ^