Learn C with example
Input a number and sum its digits
In this example we are going to find
digits of a number and then add these digits to find the sum of digits.
In this we are including two header
library files and five predefined functions. In this example we first take
number then find there digits and then add these digits to find sum in while
loop.
To find digits we just find the modulo of
10 .This will gives last digit .Then add it into another variable(r). To find
next digit we need to cut last digit so divide by 10 and store it into a
varaible(i). Repeat while loop until i in not equals to zero.
Then finally print the sum(r).
/* input a number and sum its digit */
#include<stdio.h>
#include<conio.h>
void main()
{
int i,p,r=0;
clrscr();
printf("\nEnter a number to sum its digit :\t");
scanf("%d",&i);
while(i!=0)
{
p=i%10;
r=r+p;
i=i/10;
}
printf("The sum of digit\t:%d",r);
getch();
} |
Output Of Example
Enter a no to which you have to
sum digit: 1234
The sum of digit :10 |
