View Compilation Error

0_0_32729220_6568.cpp: In function 'int main()':
0_0_32729220_6568.cpp:12:19: error: 'scanf' was not declared in this scope
     scanf("%d", &T);
                   ^
0_0_32729220_6568.cpp:20:33: error: 'memset' was not declared in this scope
         memset(dp, 0, sizeof(dp));
                                 ^
0_0_32729220_6568.cpp:44:98: error: 'printf' was not declared in this scope
             printf("The minimum amount of money in the piggy-bank is %d.\n", dp[N-1][totalWeight]);
                                                                                                  ^
0_0_32729220_6568.cpp:46:43: error: 'printf' was not declared in this scope
             printf("This is impossible.\n");
                                           ^