Compilare: user.cpp: In function ‘void QuickSort(int, int)’: user.cpp:22:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (sir[i]<x) i++; ^ user.cpp:23:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (x<sir[j]) j--; ^ user.cpp: In function ‘void doit()’: user.cpp:77:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1; i<=n; i++) ord[i]=i; ^ user.cpp:79:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1; i<=n; i++) ord1[ord[i]]=i; ^ user.cpp:82:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1; i<n; i++) ^ user.cpp: In function ‘void read()’: user.cpp:93:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=1; i<=n; i++) fin>>sir[i]; ^ user.cpp: In function ‘void write()’: user.cpp:100:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=1; i<solPos; i++) ^