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Printing the numbers in reverse order using Division and modulo operators using C
Problem
How to print the given two-digit number in reverse order with the help of division and Modulo operator using C programming language?
Solution
So far, we had seen how to reverse the string using string function and without string function. Now let’s see how to reverse the two-digit number without using the predefined function.
The logic we use to reverse the number with the help of operators is −
int firstno=number%10; //stores remainder int secondno=number/10;// stores quotient
Then print the first number followed by the second number then you will get the reverse number for the given number.
Program 1
In this example, we will take a 2-digit number and apply division and modulo operator to reverse the number −
#include<stdio.h>
int main(){
int number;
printf("enter a number:");
scanf("%4d",&number);
int firstno=number%10; //stores remainder
int secondno=number/10;// stores quotient
printf("After reversing =%d%d
",firstno,secondno);
return 0;
}Output
enter a number:45 After reversing =54
Program 2
In this example, we will take a 3-digit number and apply division and modulo operator to reverse the number −
#include<stdio.h>
int main(){
int number,num1,num2,num3,result;
printf("enter a number:");
scanf("%4d",&number);
num1 = number / 100;
num2 = (number % 100) / 10;
num3 = number%10 ;
result = 100*num3 + 10*num2 + num1;
printf("After reversing =%d
",result);
return 0;
}Output
enter a number:479 After reversing =974
Updated on: 05-Mar-2021
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