Compilare: user.cpp: In function ‘int main()’: user.cpp:29:36: warning: operation on ‘t’ may be undefined [-Wsequence-point] s[++t] = 1 - s[t-1]; ^ user.cpp:34:32: warning: operation on ‘t’ may be undefined [-Wsequence-point] s[++t] = s[t-1]; ^ user.cpp:45:32: warning: operation on ‘t’ may be undefined [-Wsequence-point] s[++t] = s[t-1]; ^ user.cpp:50:36: warning: operation on ‘t’ may be undefined [-Wsequence-point] s[++t] = 1 - s[t-1]; ^