The following part of the code

 # include 
# include 
# include 
# include 
# include 
# include 
# include 
# include 
# include "shixun. H" 
using namespace std; 

//show the error part 
Void chaxun ()//read information 
{

char name[20]; 
Int grade=0; 
Int num=0; 
float score; 
Ifstream in (" player. Dat ", the ios: : in); 
If (==0) in 
{
Cerr & lt; <"File open error! \n"; 
The exit (1); 
} 
Cout & lt; <"* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *" & lt; 
Cout & lt; 

I use VS2013 compiled tip
binary "==" : found no accept "STD: : ifstream" type of the left operand of the operator (or no acceptable conversion)
Ask everyone a great god, I am a c + + beginners

CodePudding user response:

Direct the if (! In)

CodePudding user response:

If (0==) in

CodePudding user response:

In==0 spelled wrong, in is variable?

CodePudding user response:

if (! In)
{
Cerr & lt; <"File open error! \n";
The exit (1);
}
Or
if (! In)
{
Cerr & lt; <"File open error! \n";
return 0;
}

CodePudding user response:

Ifstream in (" player. Dat ", the ios: : in);
If (in is_open ())
{

}
In is an instance, open the file stream, the most success, there seems to be not succeed there will be abnormal (to confirm) with is_open () method to confirm the flow has been opened.