Answer Posted / mallesh

#include<stdio.h>
#include<conio.h>
int xstrcmp(char*,char*);
void main()
{
int c;
char a1[20],a2[20];
printf("Enter the two string's :\n");
gets(a1);
gets(a2);
c=xstrcmp(&a1[0],&a2[0]);
printf("%d",c);
getch();
}
int xstrcmp(char *a,char *a1)
{

while((*a)==(*a1))
{
if((*a=='\0')||(*a1=='\0'))
break;
++(a);
++(a1);
}
return((*a)-(*a1));
}

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