View Compilation Error

0_0_37523820_29061.cpp:5:11: error: 'b' has not been declared
     int a,b;
           ^
0_0_37523820_29061.cpp:5:12: error: expected ')' before ';' token
     int a,b;
            ^
0_0_37523820_29061.cpp:6:5: error: expected unqualified-id before 'while'
     while (cin >> a >> b)
     ^
0_0_37523820_29061.cpp:8:5: error: expected unqualified-id before 'return'
     return 0;
     ^
0_0_37523820_29061.cpp:9:1: error: expected declaration before '}' token
 }
 ^