how do i translate this in c++???

[misosoup41]

int main()
{
int n,r,sum=0;
printf("Enter your number: ");
scanf("%d",&n);
while(n<0)
{
r=%10;
sum= sum+r;
n=n/10;

}
printf("Sum of digits= %d",sum);
getch();


return 0;
}

[Thomas1965]

Replace printf with std::cout and scanf with std::cin.
https://www.geeksforgeeks.org/basic-input-output-c/

[misosoup41]

wont run T_T

[Computergeek01]

You have to include iostream.

[Ganado]

wont run T_T

You're lucky Computergeek01 is psychic!

[misosoup41]

ahhh then why do you use 10 here? why not other number???

[Jaybob66]

why do you use 10 here? why not other number???

because the number is decimal.

sum = 0
n= "456"

loop pass 1:
r=n%10            -> 6
sum= sum+r     -> 6
n=n/10;            -> 45

loop pass 2:
r=n%10            -> 5
sum= sum+r     -> 11
n=n/10;            -> 4

loop pass 3:
r=n%10            -> 4
sum= sum+r     -> 15
n=n/10;            -> 0

as you only ever evaluate the units column (which is correct) dividing y 10 will move all the digits to the right. as in 4560 / 10 = 456

what i did above is called "dry running" its a skill you should try to develop. its a pen and paper task, but it will really help you understand what code is doing. Just pretend you are the computer and make notes of variable values as you go.