View Compilation Error

0_0_34961207_32109.cpp: In function 'int main()':
0_0_34961207_32109.cpp:4:31: error: 'scanf' was not declared in this scope
     while(~scanf("%d %d",&n,&m)&&(n,m))
                               ^
0_0_34961207_32109.cpp:23:30: error: 'printf' was not declared in this scope
             printf("%d ",a[i]);
                              ^
0_0_34961207_32109.cpp:25:27: error: 'printf' was not declared in this scope
         printf("%d\n",a[n]);
                           ^