Compilare: user.cpp: In function ‘int main()’: user.cpp:19:29: warning: conversion lacks type at end of format [-Wformat=] fscanf(in,"%ll",v[i]); ^ user.cpp:19:29: warning: too many arguments for format [-Wformat-extra-args] user.cpp:16:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d%d%d",&n,&k,&a,&b); ^ user.cpp:19:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%ll",v[i]); ^