Compilare: user.cpp: In function ‘void QuickSort(int, int)’: user.cpp:20:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (sir[i]<x) i++; ^ user.cpp:21:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (x<sir[j]) j--; ^ user.cpp: In function ‘void doit()’: user.cpp:75:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1; i<=n; i++) ord[i]=i; ^ user.cpp:77:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1; i<=n; i++) ord1[ord[i]]=i; ^ user.cpp:80:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1; i<n; i++) ^ user.cpp: In function ‘void read()’: user.cpp:91:26: 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:98:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=1; i<=solPos; i++) ^