Compilare: main.cpp: In function 'int main()': main.cpp:30:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (j<n1){ ~^~~ main.cpp:45:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (j < n2){ ~~^~~~ main.cpp:50:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ( i == n1){ ~~^~~~~ main.cpp:57:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if (i < n1 && pattern[i]!=text[j]){ ~~^~~~