View Compilation Error

0_0_28883884_30319.cpp: In function 'int main()':
0_0_28883884_30319.cpp:6:22: error: 'scnaf' was not declared in this scope
  while(~scnaf("%d",&m)){
                      ^
0_0_28883884_30319.cpp:19:8: error: 'flag' was not declared in this scope
    if((flag+flag1+flag2+flag3)>=3) printf("YES\n");
        ^