View Compilation Error

0_0_28208272_28918.cpp: In function 'int main()':
0_0_28208272_28918.cpp:13:6: error: 'a' was not declared in this scope
   if(a>b)swap(a,b);
      ^
0_0_28208272_28918.cpp:13:8: error: 'b' was not declared in this scope
   if(a>b)swap(a,b);
        ^
0_0_28208272_28918.cpp:14:6: error: 'a' was not declared in this scope
   if(a>c) swap(a,c);
      ^
0_0_28208272_28918.cpp:14:8: error: 'c' was not declared in this scope
   if(a>c) swap(a,c);
        ^
0_0_28208272_28918.cpp:15:6: error: 'b' was not declared in this scope
   if(b>c)swap(b,c);
      ^
0_0_28208272_28918.cpp:15:8: error: 'c' was not declared in this scope
   if(b>c)swap(b,c);
        ^