View Compilation Error

0_0_15428782_19131.cpp:1:10: error: #include expects "FILENAME" or <FILENAME>
 # include
          ^
0_0_15428782_19131.cpp: In function 'int main()':
0_0_15428782_19131.cpp:5:27: error: 'scanf' was not declared in this scope
 while(scanf("%d%d", &a, &b)!=EOF)
                           ^
0_0_15428782_19131.cpp:5:30: error: 'EOF' was not declared in this scope
 while(scanf("%d%d", &a, &b)!=EOF)
                              ^
0_0_15428782_19131.cpp:6:19: error: 'printf' was not declared in this scope
 printf("%d\n", a+b);
                   ^