View Compilation Error

0_0_33747052_4559.cpp: In function 'int gcd(int, int)':
0_0_33747052_4559.cpp:2:21: error: named return values are no longer supported
 int gcd(int x,int y)return x==y?x:(x>y?gcd(x-y,y):gcd(x,y-x));
                     ^