reverse a number ( like 1234 into 4321) using malloc in C programming
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Answer Posted / Arpana Bajpai
In C, you can reverse a number by allocating memory for the reversed number and filling it from right to left. Here's an example:n```n#include <stdio.h>n#include <stdlib.h>nnint reverse(int num, int *rev_num, int digits)n{n int i;n for (i = 0; i < digits; i++)n {n rev_num[i] = num % 10;n num /= 10;n if (num == 0 && i < digits - 1) return -1;n }n rev_num[i] = num;n return 0;n}nnint main()n{n int n = 1234;n int *rev_n = (int *)malloc(sizeof(int) * sizeof(int) * 4);n if (!rev_n)n {n printf Mistallocated memoryn return -1;n }n if (reverse(n, rev_n, 4))n {n printf Mistake in reversing the numbern free(rev_n);n return -1;n }n int i;n for (i = 0; i < 4; i++)n {n printf %d,n rev_n[3 - i];n }n free(rev_n);n return 0;n}n```
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