Thread: Long Integers

Are these just regular numbers, such as 1, 2 ,3, etc.? Or are they something different? I need to make a code that accepts two long integers, then raises one to the power of the other.

Edit:

I figured out something like this

Code:

#include <stdio.h>
#include <math.h>


void main(void)

{
     int a,b;
     
     printf("Please Enter a Number.\t");
     scanf("%d", &a);
    
           
     printf("\nPlease Enter a Second Number.\t");
     scanf("%d", &b);
     
     pow(a, b);
    
           
system("Pause");                      




}

but I need it to display the number. How would I do that? Also, I need to ask for someone's name, and then display it. I know it has something to do with strings, but I am not sure. Any help?

It's ashame you aren't using long integers.

This looks like an assignment... if it is, I'd have to say... open your book and read it. Maybe don't sleep in class tomorrow, either.

Originally Posted by kabuatama

I know that long integers are whole numbers, but have a greater range than regular integers?

correct, they are also defined like so

Code:

long a, b;

read up on the printf statement particularly use of the %d escape sequence.

The reason I'm ragging on you is because I feel there is no possible way your book doesn't explain this. I'm not even sure how you made it to this forum without at least at some point have come in contact with a long datatype. You're either not paying attention or you have really bad memory.

As for an answer, Quantum, pretty much gave you all you need to know. So there.

As I said, Quantum told you everything you need to write the program.

oh for gods sake throw him/her a bone!!! we were all n00bs once, some with better teachers than others, and some with better investigation skills than others too.

as stated, look up format specifiers. as a general rule of thumb, most functions in math.h take arguments which are doubles, and also return doubles. pow is one such function, so unless there is a requirement to use long, i would use doubles when passing arguments to pow. either is fine, you will just get a compiler warning relating to truncation. look up printf escape sequence for double...

couple of other things: as regurgitated ad nauseum in this forum, the return type of main is int - use it. also, that code won't compile because there is a missing brace at the end, you may not have selected all of your code when pasting it in, but in case you didnt...

also, declare all your variables at the start of the program, up where you declare your array

put the int in for safety - standards and all that.

%lf is for doubles - it stands for long float (double).

to make if work with %d, when you call pow, make a cast:

(long int)pow(a,b);

ps. your teacher is an idiot for telling you to use void main - its non standard and although it probably works on your type of compiler, your teacher (if he/she has any professional competence) should at least explain to you that if you ever find yourselves coding under a different compiler void may/may not work...