a.cpp

#include <iostream>
#include <stdlib.h>

using namespace std;

int length(char *str)
{
	int n = 0;
	while (str[n]!=0) n++;
	return n;
}


int main()
{
	char *str = new char[80];
	cout << "Enter string: ";
	cin >> str;
	cout << length(str) << endl;
	return 0;	
}