reverse a number in c program

  • on February 4, 2019
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Hello friends! welcome to my blog
Today will discuss the basic concept and simplest way to how to reverse a number in c by programming and how to make program for reverse of a number without array in c programming,

Write a program to reverse a number

#include<stdio.h>
int main(void)
{
int n, r=0,d;
clrscr();
printf(“Enter the numbern”);
scanf(“%d”,&n);
printf(“Number befour reverse= %d “,n);
while(n>0){
d= n%10;
r= r*10+d;
n=n/10;
}
printf(“Number After reverse= %d”, r);
return 0;
}
Output: Enter the Number
1234
Number befour reverse= 1234
Number After reverse= 4321

Program to count no of digit to a number

#include<stdio.h>
int main(void)
{
int n, c=0,d;
clrscr();
printf(“Enter the numbern”);
scanf(“%d”,&n);
while(n>0){
d= n%10;
n=n/10;
c++;
}
printf(“The entered number has %d digits”, c);
return 0;
}
Output: Enter the Number
1234
The entered number has 4 digits

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