c program for the reverse the digits

Question

I am looking for the C program for reverse the digits like below:

If i enter:

123456

Then the result would

Answer 1

Looks like a very old thread. But I referred the solutions here and had to cook up my own solution after testing the different programs available as solution on this website. I realized that treating the number as int will not yield necessary reversing of digit if the number ends with zero(s). So I decided to treat the number as a string and then reverse the digits. This way, I get exact reverse of the digit from a string standpoint and not a mathematical one that discards zeros at the beginning of a number.

#include 
#include 

main()
{

    char num[20];
    int x=0,slen;

    printf("Enter the number you want to reverse :");
    scanf("%s",num);
    slen=strlen(num);


    char *pointertoarray = &num[slen];

    for (x=slen;x>=0; x--){ printf("%c",*pointertoarray); pointertoarray--; }
    printf("\n");

}