Main.cc: In function ‘void tinh_tong_gia_tri_lon_nhat(int, char*)’:
Main.cc:31:5: error: ‘printf’ was not declared in this scope
printf("%d\n", gia_tri_lon_nhat);
^~~~~~
Main.cc:31:5: note: suggested alternative: ‘int’
printf("%d\n", gia_tri_lon_nhat);
^~~~~~
int
Main.cc: In function ‘int main()’:
Main.cc:37:5: error: ‘scanf’ was not declared in this scope
scanf("%d", &N);
^~~~~