In the below question I can get the str lengthif I use array for char a,but how to get length of character without using array

Question

#include <stdio.h>
#include<string.h>
int main()
{
char a;
char b[20]={'P','r','o','g','r','a','m','\0'};
printf("Enter any character \n");
scanf("%c\n", &a);
printf("%d\n",strlen(a));
printf("Length of string b = %zu \n",strlen(b));
return 0;
}

Answer 1

Length of character without array is always 1. Because char can hold only 1 character.

Answer 2

Thank you soo much I forgot the logic