View Compilation Error

0_0_37358459_10259.cpp: In function 'int gcd(int, int)':
0_0_37358459_10259.cpp:7:2: error: expected ';' before 'if'
  if(t!=0)
  ^
0_0_37358459_10259.cpp:11:2: error: 'else' without a previous 'if'
  else return n;
  ^