C++ strlen() Function

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C++ strlen() function gives the length of the given string.

strlen() function counts the number of characters in a given string and returns the integer value. Null character indicates the end of the string.

Null character indicates the end of the string.

C++ String length

Syntax:

Size_t strlen ( const char * str);

Example:

#include <iostream>   
#include <cstring>
using namespace std;

int main () {
    char str1[30] = "Welcome to";
    char str2[30] = " Onlinetpoint";
    int str3;
    strcat( str1, str2);
	cout << "String concatenate str1 & str2: " << str1 << endl;
    /* length of string str1 */
    str3=strlen( str1);
    cout << "Length of string str1 is: "<< str3 ;
    return 0;
}
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