'How to Reverse a Number in C/C++ ' c cprogramming
# include int revnumber{ int rem , rev_num=0; for { rem=n%10 ; rev_num=rev_num*10 + rem; } return rev_num; } int main{ int num, rev_num=0 ; prinf; scanf ; rev_num=revnumber ; printf ; return 0; }What if a negative number is given as input?
As we know that computer handles only binary numbers, unlike humans which can able to interpret multiple languages. The binary number representation of negative numbers is different from positive numbers. Thus if we directly apply the above algorithm to a negative number then it will produce a wrong answer. To avoid such a case, we will multiply the said negative number with -1 to make it a positive number and then apply the algorithm to make it reverse, and after that, we will again multiply -1 to the reverse number.
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