View Compilation Error

0_0_19173166_11356.cpp: In function 'int main()':
0_0_19173166_11356.cpp:7:31: error: 'scanf' was not declared in this scope
     while(~scanf("%d %d",&m,&n))
                               ^
0_0_19173166_11356.cpp:23:40: error: 'printf' was not declared in this scope
         printf("%d %d %d\n",p,q,a[p][q]);
                                        ^
0_0_19173166_11356.cpp:25:13: error: expected '}' at end of input
     return 0;
             ^