View Compilation Error

0_0_27526896_25632.cpp: In function 'int main()':
0_0_27526896_25632.cpp:33:30: error: 'scanf' was not declared in this scope
  while (scanf("%d %d", &m, &n) != EOF){
                              ^
0_0_27526896_25632.cpp:33:35: error: 'EOF' was not declared in this scope
  while (scanf("%d %d", &m, &n) != EOF){
                                   ^
0_0_27526896_25632.cpp:71:32: error: 'printf' was not declared in this scope
   printf("Test #%d\n: ", testNo);
                                ^