View Compilation Error

0_0_14546149_4144.cpp: In function 'void init()':
0_0_14546149_4144.cpp:15:18: error: 'scanf' was not declared in this scope
     scanf("%d",&m);
                  ^
0_0_14546149_4144.cpp: In function 'void work()':
0_0_14546149_4144.cpp:39:33: error: 'printf' was not declared in this scope
     rep(i,1,n) printf(" %d",a[i]);
                                 ^
0_0_14546149_4144.cpp:40:12: error: 'puts' was not declared in this scope
     puts("");
            ^
0_0_14546149_4144.cpp: In function 'int main()':
0_0_14546149_4144.cpp:46:5: error: 'cin' was not declared in this scope
     cin >> t;
     ^
0_0_14546149_4144.cpp:48:29: error: 'printf' was not declared in this scope
         printf("Case #%d:",i);
                             ^