8.1.1

#include <iostream>
#include <cmath>


using namespace std;

int myStrlen(char a[])
{
    int length=0;
    for (int i=0;a[i]!=0;i++)
    {
        length++;
    }
    return length;
}

int main()
{
    char str[] = "1203 123 123 023400   23404040 23 43 sdf 4230040 1234";
    cout<<myStrlen(str);
    return 0;
}