View Compilation Error

0_0_13067519_20253.cpp: In function 'int main()':
0_0_13067519_20253.cpp:4:8: error: expected primary-expression before '%' token
  scanf(%d %d,&a,&b);
        ^
0_0_13067519_20253.cpp:4:9: error: 'd' was not declared in this scope
  scanf(%d %d,&a,&b);
         ^