View Compilation Error

0_0_39337467_23050.cpp: In function 'int main()':
0_0_39337467_23050.cpp:29:21: error: redeclaration of 'int len'
   29 |                 int len=user.length();
      |                     ^~~
0_0_39337467_23050.cpp:24:21: note: 'int len' previously declared here
   24 |                 int len=correct.length();
      |                     ^~~