Compilare: main.cpp: In function 'int cerinta1(int)': main.cpp:14:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (x>=a[mij]) ~^~~~~~~~ main.cpp:20:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (a[mij]==x) ~~~~~~^~~ main.cpp:22:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if (a[--mij]==x) ~~~~~~~~^~~ main.cpp: In function 'int cerinta2(int)': main.cpp:33:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (x>=a[mij]) ~^~~~~~~~ main.cpp:39:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (a[mij]<=x) ~~~~~~^~~ main.cpp:41:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if (a[--mij]<=x) ~~~~~~~~^~~ main.cpp: In function 'int cerinta3(int)': main.cpp:52:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (x<=a[mij]) ~^~~~~~~~ main.cpp:58:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (a[mij]>=x) ~~~~~~^~~ main.cpp:60:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if (a[++mij]>=x) ~~~~~~~~^~~ main.cpp: In function 'int main()': main.cpp:71:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=1;i<=n;i++) ~^~~