Stream errors:
Standard error stream (cerr): The cerr is the standard
error stream that is used to output the errors. It is an instance of the
ostream class. The cerr object is said to be attached to the standard error
device, which is also a display screen but the object cerr is un-buffered and each stream insertion to cerr causes its
output to appear immediately.
The cerr is also used in conjunction with the stream insertion
operator as shown in the following example.
#include
<iostream>
using namespace std;
int main() {
char str[] = "Unable to read....";
cerr << "Error message : "
<< str << endl;
}
Output :
Error
message : Unable to read....