Compilare: user.cpp: In function ‘int main()’: user.cpp:43:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poslist[t].n == poslist[t].poslist.size()) ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~ user.cpp:25:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &m); ^ user.cpp:33:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &x, &t); ^