Write a code using a loop of your choice to find the sum of the digits of a given number. Get the input

from the user.

Test case$1$:

Input: $1234$

Output: The sum is $10$

Explanation: sum $=1+2+3+4=10$

Test case$2$:

Input: $1$

Output: The sum is $1$

Explanation: sum $=1$

Test case$2$:

Input: $0$

Output: The sum is $0$

Explanation: sum $=0$

Write in C and show code please.