Compilare: user.cpp: In function ‘int main()’: user.cpp:82:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(rez+pas<stiv[x].size()&&last>=stiv[x][rez+pas]) ^ user.cpp:86:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(rez<stiv[x].size()) ^ user.cpp: In function ‘char nextch()’: user.cpp:16:29: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf,1,MAXBUF,fi); ^