Yes, a struct is identical to a class except for the default access level (member-wise and inheritance-wise). (and the extra meaning class carries when used with a template) Every functionality supported by a class is consequently supported by a struct. You’d use methods the same as you’d use them for a class.
The system cannot find the file specified usually means the build failed (which it will for your code as you’re missing a # infront of include, you have a stray >> at the end of your cout line and you need std:: infront of cout) but you have the ‘run anyway’ option checked which means … Read more
Arrays in C are in the order rows then columns, so there are 6 rows of 9 integers, not 9 rows of 6 integers in the initializer for the array you defined.
In these if statements there are absent external parentheses I think that there should be And the loops look suspeciously. Take into account that array indices start from 0. So for example if you have an array of size N then the valid range of indices is [0, N-1] And you forgot to initialize nn1 … Read more
stepi is more detailed than nexti. if you call sum() from main() function then doing stepi reaches you inside the sum() function, but nexti doesn’t. Below is the screenshot when you call stepi when you were at call of sum() instruction (i.e., => 0x08048403 <+40>: call 0x8048419 <sum>). The stepi instuction routes you inside the … Read more
You can not initialize tst_ where you declare it. This can only be done for static const primitive types. Instead you will need to have a constructor for class test1. EDIT: below, you will see a working example I did in ideone.com. Note a few changes I did. First, it is better to have the … Read more
You cannot store arrays in a vector or any other container. The type of the elements to be stored in a container (called the container’s value type) must be both copy constructible and assignable. Arrays are neither. You can, however, use an array class template, like the one provided by Boost, TR1, and C++0x: (You’ll … Read more
They are three separate errors: won’t work because end() returns a an iterator, and object is a pointer. Those are generally distinct types (A vector can use raw pointers as iterators, but not all implementations do it. Other containers require special iterator types). doesn’t work because you take the address of the returned iterator. That … Read more
Actually, when you have an array a[SIZE], you can always check: But it’s not necessary, unless you created a dynamic array (using operator new). See the other answers, I won’t delete it just because it’s accepted now. If other answer is accepted, I’ll delete this “answer”. EDIT (almost 4 years later 🙂 ) As I … Read more
The differences are combinations of: L vs V: whether you want to pass the parameters to the exec’ed program as L: individual parameters in the call (variable argument list): execl(), execle(), execlp(), and execlpe() V: as an array of char* execv(), execve(), execvp(), and execvpe() The array format is useful when the number of parameters … Read more