How to write a C++ program that computes the length of a string entered by the user?

Question

https://code.sololearn.com/cFvcjiyGgILo/?ref=app

Answer 1

/*Different methods to find length 
of a string in C++*/
#include<string.h> 
#include<iostream>
using namespace std;
int main()
{

    // String obj 

    string str ="Computer"; 

    // 1. size of string object using size() method

    cout << str.size() << endl; 

    // 2. size of string object using length method

    cout << str.length() << endl; 

    // 3. size using old style

    // size of string object using strlen function 

    cout << strlen(str.c_str()) << endl;

    // The constructor of string will set it to the C-style string, 

    // which ends at the '\0'

    // 4. size of string object Using while loop

    int i = 0;

    while (str[i] != '\0')

    {

        ++i;

    }

    cout << i << endl;

    // 5. size of string object using for loop

    for (i=0; str[i]!='\0'; i++)

    {

    }

    cout << i << endl;

return 0;

}

OUTPUTS :-
8
8
8
8
8

Answer 2

You can simply use String.length() method
https://code.sololearn.com/cjAVbp0xrmTm/?ref=app

Answer 3

Thank you so much, Parsa Gholipout and Ashutosh Sharma .