Compilare: main.cpp: In function 'void rez()': main.cpp:12:17: warning: NULL used in arithmetic [-Wpointer-arith] if (s[poz]!=NULL) ^~~~ main.cpp:24:31: warning: array subscript has type 'char' [-Wchar-subscripts] coef[asoc[s[poz++]]]+=nr; ^ main.cpp:24:32: warning: array subscript has type 'char' [-Wchar-subscripts] coef[asoc[s[poz++]]]+=nr; ^ main.cpp: In function 'int main()': main.cpp:58:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i<st.size() && j<dr.size()) ~^~~~~~~~~~ main.cpp:58:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i<st.size() && j<dr.size()) ~^~~~~~~~~~ main.cpp:68:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (st[i]==st[i+1] && i+1<st.size()) ~~~^~~~~~~~~~ main.cpp:70:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (dr[j]==dr[j+1] && j+1<dr.size()) ~~~^~~~~~~~~~ main.cpp:35:13: warning: array subscript is above array bounds [-Warray-bounds] asoc['t']=1,asoc['x']=2,asoc['y']=3,asoc['z']=4; ~~~~~~~~^ main.cpp:35:25: warning: array subscript is above array bounds [-Warray-bounds] asoc['t']=1,asoc['x']=2,asoc['y']=3,asoc['z']=4; ~~~~~~~~^ main.cpp:35:37: warning: array subscript is above array bounds [-Warray-bounds] asoc['t']=1,asoc['x']=2,asoc['y']=3,asoc['z']=4; ~~~~~~~~^ main.cpp:35:49: warning: array subscript is above array bounds [-Warray-bounds] asoc['t']=1,asoc['x']=2,asoc['y']=3,asoc['z']=4; ~~~~~~~~^