Compilare: user.cpp: In function ‘int main()’: user.cpp:20:21: warning: unused variable ‘j’ [-Wunused-variable] int max=0, p1, p2, j; ^ user.cpp:19:30: 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:22:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &v[i]); ^ user.cpp:32:43: warning: ‘p2’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(fout, "%d %d %d", p1+1, p2+1, max); ^ user.cpp:32:43: warning: ‘p1’ may be used uninitialized in this function [-Wmaybe-uninitialized]