structure to file [REMAIN UNSOLVED] [CLOSED]

[Niklas L]

To OP: This is only meaningful if you don't intend to initialize every member separately.

home

[David Crow]

goldenrose9 wrote:

i was making a small mistake.

And you still are. _tcslen() does not tell you the size/capacity of Name, but rather how many characters it is currently holding.

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"Man who follows car will be exhausted." - Confucius

[goldenrose9]

yes you are right. but when i use

_tcscpy_s(st.detail.Name,sizeof(st.detail.Name),TEXT("WILLIAMS"));

stack around st get corrupted. moreover when i initialize st with

st.code =1;
st.detail.Age = 25;

then the value is changed to

st.code = 4278124286
st.detail.Age = -16843010

i had intialized the st as given

st.code =1;
st.detail.Age = 25;
_tcscpy_s(st.detail.Name,sizeof(st.detail.Name),TEXT("WILLIAMS"));
_tcscpy_s(st.detail.Address,sizeof(st.detail.Address),TEXT("BB-33 LANE 5"));

Some Day I Will Prove MySelf :: GOLD

[David Crow]

Have you considered:

st.code = 1;
st.st.Age = 25;
_tcscpy_s(st.st.Name, sizeof(st.st.Name), TEXT("WILLIAMS"));
_tcscpy_s(st.st.Address, sizeof(st.st.Address), TEXT("BB-33 LANE 5"));

For clarities sake, you might consider renaming the st member of Student.

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"Man who follows car will be exhausted." - Confucius

[goldenrose9]

whenever st.code and st.st.Age is initialized with any value the result is,

st.code = 4278124286
st.detail.Age = -16843010

Some Day I Will Prove MySelf :: GOLD

[David Crow]

You need to look more closely at the code snippet I provided. You should not be assigning or referencing st.Detail. In your Student structure, Detail is a type of structure, not an instance of one.

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"Man who follows car will be exhausted." - Confucius

[goldenrose9]

please give a small example. :confused:

Some Day I Will Prove MySelf :: GOLD

[David Crow]

See here.

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"Man who follows car will be exhausted." - Confucius

[goldenrose9]

on using

st.code = 1;
st.st.Age = 25;
_tcscpy_s(st.st.Name, sizeof(st.st.Name), TEXT("WILLIAMS"));
_tcscpy_s(st.st.Address, sizeof(st.st.Address), TEXT("BB-33 LANE 5"));

following error occurs.

Error 1 error C2039: 'st' : is not a member of 'Student'
Error 2 error C2228: left of '.Age' must have class/struct/union

Some Day I Will Prove MySelf :: GOLD

[David Crow]

I just compiled your code with my changes. It compiled and ran fine.

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"Man who follows car will be exhausted." - Confucius

[goldenrose9]

please give a sample so that i can understand my mistake.

Some Day I Will Prove MySelf :: GOLD