STRING COMPARE

#include<stdio.h>
#include<stdlib.h>
int strcmp1(char p[100],char q[100])
{
    int i;
    while(p[i]!='\0'&&q[i]!='\0')
    {
        if(p[i]!=q[i])
            return (p[i]-q[i]);
        i++;
    }
    return (p[i]-q[i]);
}
int main()
{
    int i;
    char a[100],b[100];
    printf("Enter 1st string: ");
    gets(a);
    printf("\nEnter 2nd string: ");
    fflush(stdin);
    gets(b);
    i=strcmp1(a,b);
    if(i==0)
        printf("\nThe two strings are equeal.\n");
    else
        printf("\nThe two string are not equeal and the difference between two strings is %d\n",i);
    return 1;
}