View Compilation Error

0_0_37291909_12373.cpp: In function 'int main()':
0_0_37291909_12373.cpp:9:25: error: 'scanf' was not declared in this scope
  ; while (scanf("%d", &N) != EOF )
                         ^
0_0_37291909_12373.cpp:9:30: error: 'EOF' was not declared in this scope
  ; while (scanf("%d", &N) != EOF )
                              ^