View Compilation Error

0_0_15152962_14341.cpp: In function 'int main()':
0_0_15152962_14341.cpp:3:8: error: expected initializer before 'B'
 {int A B;
        ^
0_0_15152962_14341.cpp:4:15: error: 'A' was not declared in this scope
 scanf("%d%d",&A,&B);
               ^
0_0_15152962_14341.cpp:4:18: error: 'B' was not declared in this scope
 scanf("%d%d",&A,&B);
                  ^
0_0_15152962_14341.cpp:5:1: error: 'sum' was not declared in this scope
 sum=A+B;
 ^
0_0_15152962_14341.cpp:6:8: error: expected primary-expression before '%' token
 printf(%d,sum);
        ^
0_0_15152962_14341.cpp:6:9: error: 'd' was not declared in this scope
 printf(%d,sum);
         ^