general protection exception is written when execute my program why is it happen.

[naobi]

my code in c++ is

#include<iostream.h>
main()
{int a[10],x[5];
a[-7]=15;
x[5]=20;
cout<<x[-5];
}

[Banfa]

because -7 and -5 are outside the bounds of the array and result in undefined behaviour.

Most likely when you access with these indices you hit a memory address that is not current valid for the program and hence the exception.

[donbock]

What do you want to happen when you use those negative indices?