Simple Problem?

[patso]

Okay, I have taken an initial computer course and didn't take the follow up until now which has been over a year and a half. I have this code that I wrote but can't remember how to get it to add all the numbers....such as
5 = 1 + 2 + 3 + 4 + 5

#include <stdio.h>

int main()

{

int num;
int a,b;

printf("Please input number for summation:");
scanf("%d", &num);

for (a=1; a<=num; a++){
printf("%d+ ", a);

}
return 0;

}

Except it prints 1 + 2 + 3 + 4 + 5 +

[brewbuck]

Do the following five times in a row:

Stomp your feet then smack yourself in the forehead.

After the last iteration what is the last thing you did?

[patso]

what?

[brewbuck]

what?

Inside you loop, you print "%d+". How could the last character printed ever be anything except '+' ?

[patso]

i understand that, as I said, it has been a while. I have tried to input 0 outside the loop and put the + before the initial number but to no avail.

[MK27]

I have this code that I wrote but can't remember how to get it to add all the numbers....

Hmmm. So if "num" is the inputed number, and "a" is the counter, in what variable did you intend to store the result of the arithmetic that you have not actually done yet?

A year and a half is a long time, I think you are confused about the completeness here.

Another approach might be to ask: How can I do arithmetic in C?

[brewbuck]

i understand that, as I said, it has been a while. I have tried to input 0 outside the loop and put the + before the initial number but to no avail.

That works, you probably just mis-coded it. An alternate solution is to treat the last number specially:

for (a=1; a<num; a++){
    printf("%d+ ", a);
}
printf("%d", a);

Notice that the "<=" has become "<"

(Wasn't trying to be mean with my previous comment, just being silly)

[patso]

no no, that is great. I thank you very much for your timely response. I guess that would make sense to do it that way.

Have a good night.