Compilare: user.cpp: In function ‘int main()’: user.cpp:70:45: warning: operation on ‘m’ may be undefined [-Wsequence-point] ax[++m]=ax[m-1]+abs(v[i+1].f-v[i].s); ^ user.cpp:72:42: warning: operation on ‘m’ may be undefined [-Wsequence-point] if(ok)ax[++m]=ax[m-1]+abs(sup-v[i].s); ^ user.cpp:97:45: warning: operation on ‘n’ may be undefined [-Wsequence-point] ay[++n]=ay[n-1]+abs(o[i+1].f-o[i].s); ^ user.cpp:100:40: warning: operation on ‘n’ may be undefined [-Wsequence-point] ay[++n]=ay[n-1]+abs(sup-o[i].s); ^