Compilare: main.cpp: In function 'int main()': main.cpp:23:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<strlen(s1); i++) ~^~~~~~~~~~~ main.cpp:29:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<t1.size()-1; i++) ~^~~~~~~~~~~~ main.cpp:41:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2; i<t1.size()-1; i++) ~^~~~~~~~~~~~ main.cpp:47:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2; i<t1.size()-1; i++) ~^~~~~~~~~~~~ main.cpp:59:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<strlen(s2); i++) ~^~~~~~~~~~~ main.cpp:64:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<t2.size()-1; i++) ~^~~~~~~~~~~~ main.cpp:74:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2; i<t2.size()-1; i++) ~^~~~~~~~~~~~ main.cpp:81:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2; i<t2.size()-1; i++) ~^~~~~~~~~~~~