View Compilation Error

0_0_39041364_20296.cpp: In function 'int main()':
0_0_39041364_20296.cpp:3:16: error: 'scanf' was not declared in this scope
    3 |         while (scanf("%d%d", &a, &b) == 2) {
      |                ^~~~~
0_0_39041364_20296.cpp:4:17: error: 'printf' was not declared in this scope
    4 |                 printf("%d\n", a + b);
      |                 ^~~~~~
0_0_39041364_20296.cpp:1:1: note: 'printf' is defined in header '<cstdio>'; did you forget to '#include <cstdio>'?
  +++ |+#include <cstdio>
    1 | int main() {