C++ Program to Find the Length of a String

To understand C++ Program to Find the Length of a String. You should learn C++ String - String Class and Char Array.

Topics:

(1) C++ Program to Find the Length of a C Style String

(2) C++ Program to Find the Length of a String Object

C++ Program to Find the Length of a C-Style String

Example 1:

#include <iostream>

#include <string.h>

using namespace std;

int main()

{

    char str[]="PC TECHNICAL PRO";

    cout<<"Length of String is "<<strlen(str);

    return 0;

}

OUTPUT:

Length of String is 16

Example 2:

#include <iostream>

using namespace std;

int main()

{

    char str[]="PC TECHNICAL PRO";

    int i=0;

    while(str[i]!='\0')

    {

        i++;

    }

    cout<<"Length is "<<i;

    return 0;

}

OUTPUT:

Length is 16

C++ Program to Find the Length of a String Object

#include <iostream>

using namespace std;

int main()

{

    string str="PC TECHNICAL PRO";

    cout<<"Length of String is "<<str.length();

    return 0;

}

OUTPUT:

Length of String is 16