Sum of numbers from right to left

Asked

Viewed 157 times

1

I need to sum the digits of a number typed by the user.

For example:

  • If input equal to 20, make 2 + 0 = 2
  • If the input is 45, make 4 + 5 = 9

Visualg and C can be used.

c visualg

  • Have you done anything so far? We need to evaluate your code to help!

  • 1

    I tried using the while. In Visualg, but it doesn’t work. of type. While in %10. Type(in), but this is a mistake

  • Edit the question (clicking here if you don’t know how) and add the code you’ve already done and how far you’ve tried

  • Only two numbers can be entered or there is no limit?

  • Edit your question at the top on the edit button and put the code... I will try to look here your code.

  • You can keep the input as string and iterate for each character... it will make it much easier.

  • @Martindala put the solution, tested ta ok!

Show 2 more comments

2 answers

0

Assuming that this input number can be from 0 to several decimal places.

The logic to solve the problem would be to individually divide the number by 10 until 0;

So the code can go like this:

#include<stdio.h>
#include<stdlib.h>
#include<conio.h>

int main()
{
    int a,soma=0,aux;
    printf("Digite um numero:");
    scanf("%d",&a);
    while(a!=0)
    {
        aux=a%10;
        a=a/10;
     soma+=aux;
    }
    printf("\nA soma dos digitos eh:%d",soma);
}

0

Use the rest of the division for 10:

int resto= 20 % 10; //obtem o resto da divisão por 10
int valorSemDireita= 20 / 10; //Como é um inteiro vai retirar o nº da direita
resultado= resto + valorSemDireita;

Browser other questions tagged c visualg

You are not signed in. Login or sign up in order to post.