View Compilation Error

0_0_27124719_16928.cpp: In function 'int main()':
0_0_27124719_16928.cpp:6:2: error: expected ';' before 'if'
  if(a==b)printf("YES\n");
  ^
0_0_27124719_16928.cpp:7:2: error: 'else' without a previous 'if'
  else printf("NO\n");
  ^