/** Solution to exercise 10.7, p. 355, "C by Dissection"
 *
 *  10. March, 2003. Lone Leth Thomsen
 **/


#include <string.h>
#include <stddef.h>
#include <stdio.h>


int mystrncmp(const char* s1, const char* s2, size_t n)              
        {
                int i;
                int ret = 0;
                for (i=0; i<n ;i++)                                         
                {
                        if ((s1[i]== NULL) && (s2[i] == NULL)) break;            
                        if (s1[i] == s2[i]) continue; else
                        {
                                if (s1[i] < s2[i]){ret = -1;break;} else {ret = 1;break;}   
                        };
                };
                return ret;                                                 
        };


int main(void)
{
        
        char* str1 = "aa";                                                
        char* str2 = "aaa";
        int size = 3;

        int i1;
        int i2;
        i1 = strncmp(str1,str2,size);                                      
        i2 = mystrncmp(str1,str2,size);                                    
        printf("%s %s %i %i %s",str1,str2,i1,i2,"\n");                    
        return 0;
}