#include <stdio.h>
#include <stdlib.h>
int mystrlen (char s[]);
int main()
{
    char s[10] = "francisco";
    mystrlen(s);
    printf("%d", mystrlen(s));
    return 0;
}
int mystrlen( char s[]){
    int i;
    for (i=0; s[i] != ‘’; i++) ;
    return (i);
}