Compilare: user.cpp: In function ‘int ver(int)’: user.cpp:9:9: warning: unused variable ‘c’ [-Wunused-variable] int c=0, nr=0; ^ user.cpp: In function ‘int main()’: user.cpp:39:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &k); ^ user.cpp:42:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &v[i]); ^