01 #include<stdio.h>
02 
03 int stringCompare(char[],char[]);
04 
05 int main()
06 {
07     char str1[100],str2[100];
08     int compare;
09 
10     printf("Enter first string: ");
11     gets(str1);
12     printf("Enter second string: ");
13     gets(str2);
14 
15     compare = stringCompare(str1,str2);
16 
17     if(compare == 1)
18         printf("Both strings are equal.");
19     else
20         printf("Both strings are not equal");
21 
22     return 0;
23 }
24 
25 int stringCompare(char str1[],char str2[])
26 {
27     int i=0,flag=0;
28 
29     while(str1[i]!='' && str2[i]!='')
30     {
31         if(str1[i]!=str2[i])
32         {
33             flag=1;
34             break;
35         }
36 
37         i++;
38     }
39 
40     if(flag==0 && str1[i]=='' && str2[i]=='')
41         return 1;
42     else
43         return 0;
44 }

 OUTPUT :
 
 (1st Run)
 
 Enter first string: Hello
 
 Enter second string: Hello
 
 Both strings are equal.
 
 
 (2nd Run)
 
 Enter first string: Hello
 
 Enter second string: Hell
 
 Both strings are not equal.