Program:
#include <iostream>
using namespace std;
int main() {
string a;
cout<<"Enter the string: ";
cin>>a;
cout<<"The length of the string: "<<a.size();
return 0;
}
Output:
Working Of The Program:
1. First, I include the iostream library in my program, which allows me to use input/output operations in C++.
2. Next, I declare that I'll be using the "std" namespace, which includes many useful functions and objects in C++.
3. In the main function, I declare a variable "a" of type string, which will be used to store the input string.
4. I then prompt the user to enter a string using the cout function, which displays the message "Enter the string: ".
5. To get the user's input, I use the cin function to read in the input string and store it in the variable "a".
6. Finally, I use the cout function again to display the length of the input string, which I obtain using the "size" member function of the string object. The message "The length of the string: " is concatenated with the size of the input string using the << operator.
7. Lastly, I return 0 to indicate that the program executed successfully.
2. Next, I declare that I'll be using the "std" namespace, which includes many useful functions and objects in C++.
3. In the main function, I declare a variable "a" of type string, which will be used to store the input string.
4. I then prompt the user to enter a string using the cout function, which displays the message "Enter the string: ".
5. To get the user's input, I use the cin function to read in the input string and store it in the variable "a".
6. Finally, I use the cout function again to display the length of the input string, which I obtain using the "size" member function of the string object. The message "The length of the string: " is concatenated with the size of the input string using the << operator.
7. Lastly, I return 0 to indicate that the program executed successfully.
