string check

#include<stdio.h>


main()
{
	int i,c=0;
	char str1[20],str2[20];
	printf("center the first string:\n");
	gets(str1);
	printf("enter the second string:\n");
	gets(str2);
	for(i=0;str1[i]!='\0'&& str2[i]!='\0';i++)
	{
		if(str1[i]!=str2[i])
		{
			c=1;
			break;
		}
	}
	if(c==0&&str1[i]=='\0'&& str2[i]=='\0')
	{
		printf("both the strings are equal");
	}
	else
	{
		printf("strings are different");
	}
		
}