View Compilation Error

0_0_22055792_18392.cpp: In function 'int main()':
0_0_22055792_18392.cpp:5:7: error: expected primary-expression before '%' token
 scanf(%d%d,&a,&b);
       ^
0_0_22055792_18392.cpp:5:8: error: 'd' was not declared in this scope
 scanf(%d%d,&a,&b);
        ^
0_0_22055792_18392.cpp:7:8: error: expected primary-expression before '%' token
 printf(%d,sum);
        ^