View Compilation Error

0_0_20956135_10640.cpp: In function 'int main()':
0_0_20956135_10640.cpp:12:18: error: 'scanf' was not declared in this scope
     scanf("%d",&t);  
                  ^
0_0_20956135_10640.cpp:19:21: error: 'getchar' was not declared in this scope
             getchar();  
                     ^
0_0_20956135_10640.cpp:23:42: error: 'printf' was not declared in this scope
         if(total > 0) printf("Player 1\n");  
                                          ^
0_0_20956135_10640.cpp:24:47: error: 'printf' was not declared in this scope
         else if(total < 0) printf("Player 2\n");  
                                               ^
0_0_20956135_10640.cpp:25:28: error: 'printf' was not declared in this scope
         else printf("TIE\n");  
                            ^