View Compilation Error

0_0_19651456_18910.cpp: In function 'int main()':
0_0_19651456_18910.cpp:5:33: error: 'scanf' was not declared in this scope
     while(~scanf("%d %d", &a, &b)){printf("%d\n\n", a+b);
                                 ^
0_0_19651456_18910.cpp:5:56: error: 'printf' was not declared in this scope
     while(~scanf("%d %d", &a, &b)){printf("%d\n\n", a+b);
                                                        ^
0_0_19651456_18910.cpp:7:1: error: expected '}' at end of input
 }
 ^