Compilare: main.cpp: In function 'int main()': main.cpp:30:19: warning: array subscript has type 'char' [-Wchar-subscripts] if(mx[last].pos!=-1) ^ main.cpp:32:23: warning: array subscript has type 'char' [-Wchar-subscripts] if(mx[last].q+1>mx[first].q) ^ main.cpp:32:37: warning: array subscript has type 'char' [-Wchar-subscripts] if(mx[last].q+1>mx[first].q) ^ main.cpp:34:25: warning: array subscript has type 'char' [-Wchar-subscripts] mx[first].q=mx[last].q+1; ^ main.cpp:34:36: warning: array subscript has type 'char' [-Wchar-subscripts] mx[first].q=mx[last].q+1; ^ main.cpp:35:25: warning: array subscript has type 'char' [-Wchar-subscripts] mx[first].pos=i; ^ main.cpp:36:33: warning: array subscript has type 'char' [-Wchar-subscripts] nextt[i]=mx[last].pos; ^ main.cpp:41:27: warning: array subscript has type 'char' [-Wchar-subscripts] if(1>=mx[first].q) ^ main.cpp:43:25: warning: array subscript has type 'char' [-Wchar-subscripts] mx[first].q=1; ^ main.cpp:44:25: warning: array subscript has type 'char' [-Wchar-subscripts] mx[first].pos=i; ^ main.cpp:47:20: warning: array subscript has type 'char' [-Wchar-subscripts] if(mx[first].q>maxx) ^ main.cpp:49:26: warning: array subscript has type 'char' [-Wchar-subscripts] maxx=mx[first].q; ^ main.cpp:15:24: warning: 'position' may be used uninitialized in this function [-Wmaybe-uninitialized] int cnt=0,i,maxx=1,position; ^~~~~~~~