This is my first program of file handling...
Here we are supposed to simulate sql language......
This is ofcourse not the complete program; m done only with insertion and select* thing; insert thing is workin properly but in case of select*; nothing gets displayed; but when i checked it in debugger; it was ok. I mean the object of class student has the information but it doesnt get displayed...
May be the information m writtin in file is not actually not gettin written in file. I dont know the actual problem; that's what i want to know.
Now m gettin another error when m done with running it.
The errror comes as: 16 bit MS-DOS subsystem
Turbo C++ IDE
The NTVDM CPU has encountered an illegal instruction CS:8baa IP:2e32 OP:c6 5f 5e 5d c3 choose close to terminate the application.
Tell me sth about this in details.
The compiler m using is of Turbo C++ IDE. - Full Code (125 lines) removed, please read Posting Guidelines
6  3513 
Hi,
When i wrote the same code in Microsoft Visual C++ 6.0. i dont get SQL> as written in the code.. Its always coming after i input the line.. And moreover its comin randomly..
Sometimes its comin 4 times in a row.
Can somebody tell me why is this happening.
In the same code when i wrote
while(enter[i]!=' ')loop
it worked. and when i wrote while(enter[i]!=' ' || enter[i]!='\n')it never used to come out of the loop.... i checked it even by debugger...
I want to know its reason as well.
Savage 1,764
Recognized Expert Top Contributor
In the same code when i wrote
while(enter[i]!=' ')loop
it worked. and when i wrote while(enter[i]!=' ' || enter[i]!='\n')it never used to come out of the loop.... i checked it even by debugger...
I want to know its reason as well.
The reason is that you have used OR instead of AND,so if any of those two expressions succeed it will loop again.Obviously enter[i] can't be ' ' and '\n' in same which is required to exit from the while loop when OR logic is used.
The reason is that you have used OR instead of AND,so if any of those two expressions succeed it will loop again.Obviously enter[i] can't be ' ' and '\n' in same which is required to exit from the while loop when OR logic is used.
Yaeh, actually i got it when i again debugged it but still its not working..
I guess now there can be some problem in gettin inserted in file..
I really dont know why its comin out of while loop of selectall function.,
Hey people, am waitin to know wats wrong with my code...
Laharl 849
Recognized Expert Contributor
Can we have a snippet of the code that's having a problem? Not the whole code, but a bit, say, this while loop you mention.
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