There is no such thing as a null printer in C++. You are perhaps thinking of the null device to which output can be redirected from the command line (effectively hiding the output of a program). However this has nothing whatsoever to do with C++, it is entirely dependant upon the operating system.
Address of the allocated area, or NULL.
int i = 0; while(str[i] != NULL){ i++; }
A std::string is an object that encapsulates an array of type char whereas a C-style string is a primitive array with no members. A std::string is guaranteed to be null-terminated but a C-style string is not.
Yes, C++ has pointers, which are references to memory locations. which are variables that store memory addresses, or NULL (zero). If the pointer is non-NULL, the pointer is said to dereference the object (or variable) residing at the stored memory address, which permits indirect access to that object so long as the object remains in scope.
Adding printers is a function of the operating system. The operating system should also provide facilities that allow you to enumerate all printers registered with the operating system.
Address of the allocated area, or NULL.
In C++ NULL is defined as 0. It's a design failure, will be fixed with a new 'nullptr' keyword.
a pointer that is not pointing to anything
Examples: 1, -1, -2.5, 'a', "Hello", NULL
#include<stdio.h> int main (void) { char upper[27]; // A-Z plus null terminator char lower[27]; // a-z plus null terminator char c; int i; for (i = 0, c = 'A'; c <= 'Z'; ++c, ++i) { upper[i] = c; lower[i] = c - 'A' + 'a'; } upper[i] = 0; // null-terminator lower[i] = 0; // null-terminator printf ("%s\n", upper); printf ("%s\n", lower); return 0; }
void myfun (int *pi){if (i==NULL) printf ("check failed");}
int i = 0; while(str[i] != NULL){ i++; }
From a C-program?ShellExecute (NULL, "open", "C:\DIR\INDEX.HTML", NULL, NULL, SW_SHOW);
A std::string is an object that encapsulates an array of type char whereas a C-style string is a primitive array with no members. A std::string is guaranteed to be null-terminated but a C-style string is not.
In php mathmatical operations treat null like 0, so any number plus null equals itself. For example #!/usr/local/bin/php printf ("%d\n", null+6); printf ("%d\n", 6+null); ?> output: 6 6
#define NULL ((void *)0) /* defined in <stddef.h> */ const char *mynullvar = NULL;
It's the maximum.Probably C, the continuum.The cardinality (count) of the infinite set of integers is Aleph-null. Then C = 2^(Aleph-null).