View Compilation Error

0_0_30461052_18328.cpp: In function 'int main()':
0_0_30461052_18328.cpp:116:20: error: 'ret' was not declared in this scope
                 pi(ret);
                    ^
0_0_30461052_18328.cpp:24:30: note: in definition of macro 'pi'
 #define pi(x) printf("%d\n", x)
                              ^