View Compilation Error

0_0_29194453_2499.cpp: In function 'int main()':
0_0_29194453_2499.cpp:5:8: error: expected unqualified-id before 'int'
 {int a,int b;
        ^
0_0_29194453_2499.cpp:6:9: error: 'b' was not declared in this scope
 cin>>a>>b;
         ^