View Compilation Error

0_0_28702118_15912.cpp: In function 'int main()':
0_0_28702118_15912.cpp:18:21: error: 't' was not declared in this scope
                     t=b[j];
                     ^
0_0_28702118_15912.cpp: At global scope:
0_0_28702118_15912.cpp:42:7: error: expected unqualified-id before 'return'
       return 0;
       ^
0_0_28702118_15912.cpp:43:1: error: expected declaration before '}' token
 } 
 ^