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#1
June 25th, 2013, 11:06 AM
 arman.khandaker
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Using 'if' statements

I am trying to write a program that finds the largest and smallest of four integers entered by the user. For example:
Code:
```Enter 4 integers: 4 17 9 32
Largest integer: 32
Smallest integer: 4```

The challenge is to use the 'if' statement for maximum 4 times. Help me if you can. Thanks in advance

#2
June 25th, 2013, 11:29 AM
 dwise1_aol
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Show us what you have done so far.

You've been on this ride before, so you already know the rules.

#3
June 25th, 2013, 02:06 PM
 Homi@th
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Quote:
 Originally Posted by arman.khandaker I am trying to write a program that finds the largest and smallest of four integers entered by the user. For example: Code: ```Enter 4 integers: 4 17 9 32 Largest integer: 32 Smallest integer: 4``` The challenge is to use the 'if' statement for maximum 4 times. Help me if you can. Thanks in advance

More challenge if you use 'if' 0 time

Code:
```#include<stdio.h>
void main(){
int i=1,x,y,z[4];
for(printf("Enter 4 integers: "),scanf("%d %d %d %d", &z[0],&z[1],&z[2],&z[3]),
x=y=z[0];i<4;x=(z[i]>x)?z[i]:x,y=(z[i]<y)?z[i]:y,i++);
printf("Largest integer: %d\nSmallest integer: %d\n",x,y);
}```
Comments on this post
DaWei_M disagrees: Don't use "void main."

#4
June 25th, 2013, 02:32 PM
 clifford
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Really? Have you tried yet - this is a really simple algorithm.

Clue:

if a is bigger than my biggest result so far, then my biggest result so far is a.

That's one if and one value. You have 4 values and can use 4 ifs. It is so trivial that I have probably already said too much.

Note that you need to initialise the biggest so far to the smallest possible integer - and that is not zero BTW.

#5
June 25th, 2013, 05:25 PM
 tredway
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the code could be like this! the trick is in green color, initialize it outside the loop

Code:
```int main()
{
int a[4],i,max,min;
scanf("%d %d %d %d", &a[0],&a[1],&a[2],&a[3]);
max=min=a[0];
/* Edited out solution - please don't hand out complete answers */
printf("max:%d\nmin:%d\n", max, min);
return 0;
}```

Last edited by Scorpions4ever : June 25th, 2013 at 05:38 PM.

#6
June 27th, 2013, 07:49 PM
 arman.khandaker
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Okay thanks guys. I was actually looking for a way to do it without using arrays.
Comments on this post
clifford disagrees: And we were actually looking for you to make an attempt. The example showing an array does so only
for convenience; you could use four separate variables if you wish.

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