Compilare: user.cpp: In function ‘int main()’: user.cpp:42:37: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] while (s[i]<'a' || s[i]>'z' && i<lung) ^ user.cpp:86:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0;j<a[i].lit.size();j++) ^ user.cpp:34:20: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(s,lmax,f); ^