Compilare: user.cpp: In function ‘int main()’: user.cpp:7:11: warning: variable ‘fin’ set but not used [-Wunused-but-set-variable] FILE *fin, *fout; ^~~ user.cpp:7:17: warning: variable ‘fout’ set but not used [-Wunused-but-set-variable] FILE *fin, *fout; ^~~~ user.cpp:10:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &V, &N); ^ user.cpp:11:50: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(i=1; i<=N; i++) {scanf("%d", &numList[i]); if(numList[i]!=numList[i-1])vf++; groupList[vf]++;} ^