Compilare: main.cpp: In function 'int main()': main.cpp:51:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<strlen(a); i++) ~^~~~~~~~~~ main.cpp:55:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<strlen(b); i++) ~^~~~~~~~~~ main.cpp:67:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<strlen(a); i++) ~^~~~~~~~~~ main.cpp:69:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<strlen(b); i++) ~^~~~~~~~~~ main.cpp:91:18: warning: suggest parentheses around assignment used as truth value [-Wparentheses] if(ultimul=-1) ultimul=n-1; ^