View Compilation Error

0_0_36799923_1205.cpp: In function 'int main()':
0_0_36799923_1205.cpp:4:21: error: 'scanf' was not declared in this scope
  int T;scanf("%d",&T);
                     ^
0_0_36799923_1205.cpp:25:38: error: 'printf' was not declared in this scope
     printf("Case %d: %d",++kase,total); 
                                      ^
0_0_36799923_1205.cpp:28:19: error: 'printf' was not declared in this scope
  if(T) printf("\n");
                   ^