View Compilation Error

0_0_29286829_6324.cpp: In function 'int main()':
0_0_29286829_6324.cpp:4:14: error: 'a' was not declared in this scope
 scanf("%d%d"&a,&b);
              ^
0_0_29286829_6324.cpp:4:17: error: 'b' was not declared in this scope
 scanf("%d%d"&a,&b);
                 ^