ios fail() function in C++ with Examples
The fail() method of ios class in C++ is used to check if the stream is has raised any fail error. It means that this function will check if this stream has its failbit set.
Syntax:
bool fail() const;
Parameters: This method does not accept any parameter.
Return Value: This method returns true if the stream has failbit set, else false.
Example 1:
// C++ code to demonstrate // the working of fail() function #include <bits/stdc++.h> using namespace std; int main() { // Stream stringstream ss; // Using fail() function bool isFail = ss.fail(); // print result cout << "is stream fail: " << isFail << endl; return 0; } |
Output:
is stream fail: 0
Example 2:
// C++ code to demonstrate // the working of fail() function #include <bits/stdc++.h> using namespace std; int main() { // Stream stringstream ss; ss.clear(ss.failbit); // Using fail() function bool isFail = ss.fail(); // print result cout << "is stream fail: " << isFail << endl; return 0; } |
Output:
is stream fail: 1
Reference: hhttp://www.cplusplus.com/reference/ios/ios/fail/