In this article we will learn to implement a C program to find the sum of individual digits of a positive integer. A C program is provided below which reads a number and gives the sum of digits and reverse of that number.
Program is as follows:
//C program to find the sum of individual digits of a given positive integer
//and find the reverse of a given number
#include<stdio.h>
#include<conio.h>
void main()
{
int num,dup,sum,rev;
printf("Enter a +ve integer: ");
scanf("%d",&num);
dup=num;
sum=0;
while(num>0)
{
sum+=num%10;
num/=10;
}
printf("Sum of individual digits is: %d\n",sum);
rev=0;
while(dup>0)
{
rev=rev*10+(dup%10);
dup/=10;
}
printf("Reverse of the given number is: %d",rev);
getch();
}
Input and output for the above program is as follows:
Enter a +ve integer: 123
Sum of individual digits is: 6
Reverse of the given number is: 321
Suryateja Pericherla, at present is a Research Scholar (full-time Ph.D.) in the Dept. of Computer Science & Systems Engineering at Andhra University, Visakhapatnam. Previously worked as an Associate Professor in the Dept. of CSE at Vishnu Institute of Technology, India.
He has 11+ years of teaching experience and is an individual researcher whose research interests are Cloud Computing, Internet of Things, Computer Security, Network Security and Blockchain.
He is a member of professional societies like IEEE, ACM, CSI and ISCA. He published several research papers which are indexed by SCIE, WoS, Scopus, Springer and others.
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