Structure variable not working inside main
Following is the simple program for sum using structure.
I am facing a problem when I declare structure variable "dd" outside of main with structure then the programme works but if declared within main, it does not . Can anyone tell me why it is so ?Code:#include<iostream> #include<string.h> using namespace std; struct ab { int x,y; }dd; void sum() { cin>> dd.x>>dd.y; int z= dd.x + dd.y; cout<<z; } int main() { sum(); return 0; }
Post your code illustrating the problem. The code you posted should work because you're using a horrible global variable.but if declared within main, it does not .
On the face of it, it could be something as simple as you need to pass the local variable as a parameter to sum().
Code:void sum(ab &dd) { cin>> dd.x>>dd.y; int z= dd.x + dd.y; cout<<z; } int main() { ab dd; sum(dd); return 0; }
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
