Answer / vishnu

#include<stdio.h>
#include<conio.h>
void main()
{
int r,num,sum=0;
clrscr();
printf("Enter any Digit \n");
scanf("%d", &num);
while(num!=0)
{
r=num%10;
sum=sum*10+r;
num=num/10;
}
printf("Reverse Digit of a given number = %d",sum);
getch();
}

Answer / vignesh1988i

#include<stdio.h>
#include<conio.h>
void main()
{
int n,a;
printf("enter the number to be reversed :");
scanf("%d",&n);
printf("the reversed number is :");
for(int i=0;n>0;i++)
{
a=n%10;
n=n/10;
printf("%d",a);
}
getch();
}

Answer / vaibhav

#include<stdio.h>
#include<conio.h>
void main()
{
int no, t;
clrscr();
printf("\nenter the no.");
scanf("%d",&no);
while(no!=0)
{
t=no%10;
no=no/10;
printf("%d",t);
}
getch();
}

Answer / jet lee

#include<stdio.h>

int rev(int y);
int main()
{
int x;
printf("\n please enter the number:\n");
scanf("%d",&x);
rev(x);
return 0;
}

int rev(int y)
{

int i;
do
{
i=(y%10);
printf("%d",i);
y=(y/10);
}while(y>0);
}

Answer / srinath, hyd

#include<stdio.h>
#include<conio.h>
void main()
{
int no, t;
clrscr();
printf("\nenter the no.");
scanf("%d",&no);
while(no!=0)
{
t=no%10;
no=no/10;
printf("%d",t);
}
getch();
}

Answer / sreejesh1987

int rev(int,int);
void main()
{
int a,b;
clrscr();
printf("\nEnter the number to reverse:");//456
scanf("%d",&a);
b=a%10;//b=6
printf("\nReverse of the number is: %d",rev(a,b));
getch();
}

int rev(int a,int b)
{
if(a>9)//456
{
a=a/10;//a=45
b=b*10+a%10;//65
return rev(a,b);
}
else
return b;
}

Code for calculating square root without using library function, of math.h

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