Answer:
The program written in C language is as follows
#include<stdio.h>
int main()
{
 //Declare digit
 int digit;
 //Prompt user for input
 printf("Enter any integer: [10 - 100]: ");
 scanf("%d", &digit);
//Check if digit is within range 10 to 100
 while(digit<10 || digit >100)
 {
 printf("Enter any integer: [10 - 100]: ");
 scanf("%d", &digit);
 }
 //Initialize counter to 0
 int counter = 0;
 for(int i=digit;i>0;i--)
 {
 printf("%3d", i); //Print individual digit
 counter++;
 if(counter == 10) //Check if printed digit is up to 10
 {
 printf("\\"); //If yes, print a new line
 counter=0; //And reset counter to 0
 }
 }
}
Step-by-step explanation:
int digit; ->This line declares digit as type int
printf("Enter any integer: [10 - 100]: "); -> This line prompts user for input
scanf("%d", &digit);-> The input us saved in digit
while(digit<10 || digit >100) {
printf("Enter any integer: [10 - 100]: ");
scanf("%d", &digit); } 
->The above lines checks if input number is between 10 and 100
int counter = 0; -> Declare and set a counter variable to 0
for(int i=digit;i>0;i--){ -> Iterate from user input to 0
printf("%3d", i); -> This line prints individual digits with 3 line spacing
counter++; -> This line increments counter by 1
if(counter == 10){-> This line checks if printed digit is up to 10
printf("\\"); -> If yes, a new line is printed
counter=0;} -> Reset counter to 0
} - > End of iteration