View Compilation Error

0_0_31456090_5136.cpp: In function 'int main()':
0_0_31456090_5136.cpp:7:23: error: 'scanf_s' was not declared in this scope
     while(scanf_s("%d")!=EOF&&(n!=0))
                       ^
0_0_31456090_5136.cpp:10:21: error: expected ')' before ';' token
         scanf_s("%d";&a[i]);
                     ^
0_0_31456090_5136.cpp:10:27: error: expected ';' before ')' token
         scanf_s("%d";&a[i]);
                           ^
0_0_31456090_5136.cpp:24:5: error: expected ';' before 'return'
     return 0;
     ^