Sum of numbers from right to left [closed]

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Sum of numbers from right to left [closed]

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#1 by (0 votes)
#2 by (0 votes)

1

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

For example:

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

VisualG and C can be used.

c visualg

asked by anonymous 20.07.2018 / 16:17

2 answers

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score 0 · Answer 1

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;

score 0 · Answer 2

Assuming this entry number can range from 0 to several decimal places.

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

Then the code can look 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);
}