Compilare: user.cpp: In function ‘void tr(char)’: user.cpp:43:41: warning: operation on ‘vg’ may be undefined [-Wsequence-point] if(op=='+') {t[vg-1]=t[vg-1]+t[vg--];}else ^ user.cpp:43:41: warning: operation on ‘vg’ may be undefined [-Wsequence-point] user.cpp:44:41: warning: operation on ‘vg’ may be undefined [-Wsequence-point] if(op=='-') {t[vg-1]=t[vg-1]-t[vg--];}else ^ user.cpp:44:41: warning: operation on ‘vg’ may be undefined [-Wsequence-point] user.cpp:47:36: warning: operation on ‘vg’ may be undefined [-Wsequence-point] t[vg-1]=t[vg-1]*t[vg--]; ^ user.cpp:47:36: warning: operation on ‘vg’ may be undefined [-Wsequence-point] user.cpp:51:41: warning: operation on ‘vg’ may be undefined [-Wsequence-point] if(op=='/') {t[vg-1]=t[vg-1]/t[vg--];} ^ user.cpp:51:41: warning: operation on ‘vg’ may be undefined [-Wsequence-point] user.cpp: In function ‘int mdf(int)’: user.cpp:73:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (b[x][k]>='0' && b[x][k]<='9') ^ user.cpp:73:39: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (b[x][k]>='0' && b[x][k]<='9') ^ user.cpp:74:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] t[++vg]=b[x][k]-'0'; ^ user.cpp:77:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] t[++vg]=mre[b[x][k]]; ^ user.cpp:77:36: warning: array subscript has type ‘char’ [-Wchar-subscripts] t[++vg]=mre[b[x][k]]; ^ user.cpp:100:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (vlr[k]>vlr[op]) ^ user.cpp:100:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (vlr[k]>vlr[op]) ^ user.cpp: In function ‘int rez(int)’: user.cpp:140:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[k]>9) ^ user.cpp:143:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] mre[smb]=v[k]; ^ user.cpp:143:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] mre[smb]=v[k]; ^ user.cpp:145:37: warning: array subscript has type ‘char’ [-Wchar-subscripts]