Compilare: main.cpp: In function 'void prefix()': main.cpp:24:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1; i<strlen(a); i++){ ~^~~~~~~~~~ main.cpp: In function 'void rezolvare()': main.cpp:34:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<strlen(b); i++){ ~^~~~~~~~~~ main.cpp:37:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (j==strlen(a)){ ~^~~~~~~~~~~