View Compilation Error

1_645_3005_24515.cpp: In function 'int main()':
1_645_3005_24515.cpp:106:13: error: expected primary-expression before '=' token
 int main() {=
             ^
1_645_3005_24515.cpp:107:2: error: expected primary-expression before 'int'
  int cas; scanf("%d", &cas);
  ^
1_645_3005_24515.cpp:107:24: error: 'cas' was not declared in this scope
  int cas; scanf("%d", &cas);
                        ^