Jan 9, 2012

C Program to add one to digits of a number.

Write C Program to add one to digits of a number.
C Program that adds the 1 to each single digit of a number, i.e for Example 12345's output is 23456.
If the digit is 9 it adds 1 and follows the carry system, 9 becomes 0 and 9's left digit adds one more 1. I.e., 3491's output is 4602. Read more about C Programming Language .



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#include<stdio.h>
#include<conio.h>
int main()
{
 int num,sum=0;
 int rem,check=0;
 clrscr( );
 printf("Enter the required number:");
 scanf("%d",&num);
 printf("\nGiven Number: %d",num);
 while(num>0) 
 {
  rem=num%10;
  if(rem!=9)
  {
   if(check==0) 
    sum=(10*sum)+(rem+1);
   else{
    sum=(10*sum)+(rem+2);
    check=0;
   }
  } 
  else{
   sum=(10*sum)+0;
   check=1;
  }
  num=num/10;
 } 

 num=sum; sum=0;
 while(num>0)
 {
  rem=num%10;
  sum=(10*sum)+rem;
  num=num/10;
 }
 printf("\nAfter Adding one: %d",sum);
 getch( );
 return 0;
}
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