//TEXT3_1.CPP-----------------------------1
//iostream.h------------------------------2
#include <iostream.h>---------------------3
main()
{
int varl; 这int-----------------------4
int sum;
int Sum;
varl=2;
sum=0;
Sum=5;
sum=Sum+varl;
cout <<"sum is "<< sum<<"\n";--cout------------5
}
请问这以上12345这是什么意思,我刚学c++