Run-Time Check Failure

[momotaro]

this is the error message that i kep having:
Run-Time Check Failure #3 - The variable 's' is being used without being initialized.

and this is the part of the code concerned:

void ConvertToPostFix(char *exp)
 
{
 
int i;
 
stack *s;
 
for(i = 0; i != '\n'; i++)
 
{
 
if(isalnum(exp[i]))
 
printf("%c", exp[i]);
 
else if(i == 0 && !(isalnum(exp[i])))
 
ERROR("WRONG INPUT!");
 
else
 
Push(exp[i], s);
 
}
 
}
 
 

[JosAH]

this is the error message that i kep having:
Run-Time Check Failure #3 - The variable 's' is being used without being initialized.

and this is the part of the code concerned:

void ConvertToPostFix(char *exp)
 
{
 
int i;
 
stack *s;
 
for(i = 0; i != '\n'; i++)
 
{
 
if(isalnum(exp[i]))
 
printf("%c", exp[i]);
 
else if(i == 0 && !(isalnum(exp[i])))
 
ERROR("WRONG INPUT!");
 
else
 
Push(exp[i], s);
 
}
 
}
 
 

Just read the diagnostic message. Did you initialize variable 's'? I can't see it
anywhere.

kind regards,

Jos

[weaknessforcats]

You are using Visual Studio.NET. When you call the push function with s as an argument the compiler needs to make a copy of it. It sees that the variable has never been initialized so it knows the copy is garbage, hence the warning.

You have to initialize s before using s.