Compilare: main.cpp: In function 'void afis()': main.cpp:12:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=nr;i++) ~^~~~ main.cpp: In function 'int main()': main.cpp:45:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=n;i++) ~^~~ main.cpp:54:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[i]>i) ~~~~^~ main.cpp:56:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(v[i]>i) ~~~~^~