View Compilation Error

0_0_37335873_18470.cpp: In function 'int main()':
0_0_37335873_18470.cpp:11:21: error: 'j' was not declared in this scope
              cin>>b[j];
                     ^
0_0_37335873_18470.cpp:23:20: error: expected ')' before ';' token
          if(int i=0;i<3;i++){
                    ^
0_0_37335873_18470.cpp:23:21: error: 'i' was not declared in this scope
          if(int i=0;i<3;i++){
                     ^