Compilare: main.cpp: In function 'bool substring(int, int)': main.cpp:15:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(l=0;l<strlen(S[y]);l++) ~^~~~~~~~~~~~~ main.cpp:22:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(nr==strlen(S[x])) ~~^~~~~~~~~~~~~~ main.cpp: In function 'void rezolvare1()': main.cpp:32:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(strlen(S[i])>maxx) ~~~~~~~~~~~~^~~~~ main.cpp:38:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(strlen(S[i])==maxx) ~~~~~~~~~~~~^~~~~~ main.cpp:40:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<strlen(S[i]); j++) ~^~~~~~~~~~~~~