Find the length of a string

To find out the length of a string, we follow the following step -

1. Declare a counter variable with default value 0
2. Read the String
3. Travel the string, until the '\\0' character return.
4. Print the counter value as string length

int main()
{
	char str[30],i,cnt=0;
	printf("Enter A String: ");
	gets(str);
	for(i=0;str[i]!='\0';i++)
	{
		cnt++;
	}
	printf("Length of the string is %d",cnt);
	return 0;
}