#include <stdio.h>
int main()
{
int n, r = 0;
{
int n, r = 0;
printf("Enter a number to reverse\n");
scanf("%d", &n);
scanf("%d", &n);
while (n != 0)
{
r = r * 10;
r = r + n%10;
n = n/10;
}
{
r = r * 10;
r = r + n%10;
n = n/10;
}
printf("Reverse of the number = %d\n", r);
return 0;
}
}
Output of program:

Reverse number C program using recursion
#include <stdio.h>
long reverse(long);
int main()
{
long n, r;
scanf("%ld", &n);
r = reverse(n);
printf("%ld\n", r);
return 0;
}
int main()
{
long n, r;
scanf("%ld", &n);
r = reverse(n);
printf("%ld\n", r);
return 0;
}
long reverse(long n) {
static long r = 0;
if (n == 0)
return 0;
r = r * 10;
r = r + n % 10;
reverse(n/10);
return r;
}
static long r = 0;
if (n == 0)
return 0;
r = r * 10;
r = r + n % 10;
reverse(n/10);
return r;
}
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