String compare

#include<stdio.h>
int stringCompare(char[],char[]);
int main(){
    char str1[100],str2[100];
    int compare;
printf("Enter first string: ");
   scanf("%s",str1);
    printf("Enter second string: ");
    scanf("%s",str2);
    compare = stringCompare(str1,str2);
    if(compare == 1)
         printf("Both strings are equal.");
    else
       printf("Both strings are not equal");
return 0;
}
int stringCompare(char str1[],char str2[]){
int i=0,flag=0;
     while(str1[i]!='�' && str2[i]!='�'){
         if(str1[i]!=str2[i]){
             flag=1;
             break;
         }
         i++;
    }
    if (flag==0 && str1[i]=='�' && str2[i]=='�')
         return 1;
    else
       return 0;
}

Output:
Enter first string::abc
Enter second string:abc
Both strings are equal.