Compilare: main.cpp: In function 'int get_dif1(char*, char*, int, int)': main.cpp:37:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (idx >= v.size()-1){ /// sunt fix pe ultimul element ~~~~^~~~~~~~~~~~~ main.cpp:45:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (idx >= v.size()) /// inseamna ca am reusit sa l potrivesc ~~~~^~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:108:21: warning: converting to non-pointer type 'char' from NULL [-Wconversion-null] s1[i] = NULL; ^~~~ main.cpp:119:21: warning: converting to non-pointer type 'char' from NULL [-Wconversion-null] s2[i] = NULL; ^~~~ main.cpp:158:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<L[nod].size();i++){ ~^~~~~~~~~~~~~~ main.cpp:73:31: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread (buff,1,DIMBUFF,fin); ^