View Compilation Error

0_0_38665341_1131.cpp: In function 'int main()':
0_0_38665341_1131.cpp:19:26: error: expected ';' before 'int'
   19 |     scanf("%d%d", &a, &b)
      |                          ^
      |                          ;
   20 | 
   21 |         int x, y;
      |         ~~~               
0_0_38665341_1131.cpp:22:27: error: 'x' was not declared in this scope
   22 |         int g = gcd(a, b, x, y);
      |                           ^
0_0_38665341_1131.cpp:22:30: error: 'y' was not declared in this scope
   22 |         int g = gcd(a, b, x, y);
      |                              ^