ios setstate() function in C++ with Examples
The setstate() method of ios class in C++ is used to change the current state of this stream by setting the flags passed as the parameters. Hence this function changes the internal state of this stream. Syntax:
void setstate(iostate state)
Parameters: This method accepts the iostate as parameter which is the combination of goodbit, failbit, eofbit and badbit flags to be set in this stream. Return Value: This method do not return anything.
Time Complexity: O(1)
Auxiliary Space: O(1)
Example 1:
CPP
// C++ code to demonstrate // the working of setstate() function #include <bits/stdc++.h> using namespace std; int main() { // Stream 1 stringstream ss; ss.clear(ss.goodbit); // Stream 2 stringstream ss2; cout << "current stream: " << ss2.rdstate() << endl; // Using setstate() function ss2.setstate(ss.rdstate()); // Print the result cout << "updated stream: " << ss2.rdstate() << endl; return 0; } |
Output:
current stream: 0 updated stream: 0
Example 2:
CPP
// C++ code to demonstrate // the working of setstate() function #include <bits/stdc++.h> using namespace std; int main() { // Stream 1 stringstream ss; ss.clear(ss.failbit); // Stream 2 stringstream ss2; cout << "current stream: " << ss2.rdstate() << endl; // Using setstate() function ss2.setstate(ss.rdstate()); // Print the result cout << "updated stream: " << ss2.rdstate() << endl; return 0; } |
Output:
current stream: 0 updated stream: 4
Reference: hhttp://www.cplusplus.com/reference/ios/ios/setstate/