Compilare: main.cpp: In function 'int main()': main.cpp:17:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<strlen(t1);i++) ~^~~~~~~~~~~ main.cpp:21:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<strlen(t2);i++) ~^~~~~~~~~~~ main.cpp:33:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<strlen(t1);i++) ~^~~~~~~~~~~ main.cpp:50:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<strlen(t2);i++) ~^~~~~~~~~~~