Compilare: main.cpp: In function 'int main()': main.cpp:12:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<strlen(b);i++) ~^~~~~~~~~~ main.cpp:17:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(b[t]==a[j]&&t<strlen(b)&&j<strlen(a)){ ~^~~~~~~~~~ main.cpp:17:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(b[t]==a[j]&&t<strlen(b)&&j<strlen(a)){ ~^~~~~~~~~~ main.cpp:21:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j==strlen(a)){ ~^~~~~~~~~~~