iomanip setw() function in C++ with Examples
The setw() method of iomaip library in C++ is used to set the ios library field width based on the width specified as the parameter to this method.
Syntax:
setw(int n)
Parameters: This method accepts n as a parameter which is the integer argument corresponding to which the field width is to be set.
Return Value: This method does not returns anything. It only acts as stream manipulators.
Example 1:
// C++ code to demonstrate // the working of setw() function #include <iomanip> #include <ios> #include <iostream> using namespace std; int main() { // Initializing the integer int num = 50; cout << "Before setting the width: \n" << num << endl; // Using setw() cout << "Setting the width" << " using setw to 5: \n" << setw(5); cout << num << endl; return 0; } |
Output:
Before setting the width: 50 Setting the width using setw to 5: 50
Example 2:
// C++ code to demonstrate // the working of setw() function #include <iomanip> #include <ios> #include <iostream> using namespace std; int main() { // Initializing the integer int num = 50; cout << "Before setting the width: \n" << num << endl; // Using setw() cout << "Setting the width" << " using setw to 10: \n" << setw(10); cout << num << endl; return 0; } |
Output:
Before setting the width:
50
Setting the width using setw to 10:
50
Reference: http://www.cplusplus.com/reference/iomanip/setw/
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