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while loop in c++ help needed

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Join Date: Mar 2004

Posts: 1

Reputation: ziddi5 is an unknown quantity at this point

Solved Threads: 0

ziddi5

Offline

Newbie Poster

while loop in c++ help needed

Mar 4th, 2004

Please help me get the minimum in the following problem. i get everything else but the min. take a look at it.

//**************************************************
// Description : This program asks a user for five real numbers, then outputs
// the number of data entries entered, the total of the numbers
// entered, the mean average of the numbers entered, the minimum
// and maximum value entered. it will also format the output to
// one decimal place.
//**************************************************
#include <iostream>
#include <stdlib.h>
using namespace std;
int main(void)
{
double num, sum = 0, avg, max, min;
int count = 0; // loop counter variable
while (count < 5)
{
cout <<"Enter number " << count ++ << ":";
cin >> num;
sum = sum + num;
if (count == 0)
{
max = num;
min = num;
}
if (num > max)
{
max = num;
}
if (num < min)
{
min = num;
}
}
cout <<"The number of values entered is " << count << endl;
cout <<"The sum of values entered is " << sum << endl;
avg = sum / count;
cout <<"The average of values entered is " << avg << endl;
cout <<"The maximum value entered is " << max << endl;
cout <<"The minimum of value entered is " << min << endl;

system("PAUSE");
return 0;
}

Last edited by cscgal; Mar 7th, 2004 at 12:58 am.

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Join Date: Feb 2002

Posts: 1,135

Reputation: samaru is just really nice

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samaru

Offline

a.k.a inscissor

Re: while loop in c++ help needed

Mar 6th, 2004

In your while loop, you're telling it to loop five times and keeping track with variable count. Once you first enter the while loop, you're immediately incrementing it with the stament count++. Even if you're using this with a cout as output, it still increments it. What does this mean? It means that once it enter, it equals 1, and your statement of

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
if (count == 0) {
 max = num;
 min = num;
}
if (count == 0) {
 max = num;
 min = num;
}

will never run. All you have to do is take the "++" from the "count" variable. You then increment this variable before another loop begins. Like this:

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
#include <iostream>
#include <stdlib.h>
using namespace std;
int main(void) {
 double num, sum = 0, avg=0, max=0, min=0;
 int count = 0; // loop counter variable 
 while (count < 5) {
  cout <<"Enter number " << count << ":";
  cin >> num;
  sum = sum + num;	
  if (count == 0) {
   max = num;
   min = num;
  }
  if (num > max) {
   max = num;
  }
  if (num < min) {
   min = num;
  }
  count++;
 }
 
 cout <<"The number of values entered is " << count << endl;
 cout <<"The sum of values entered is " << sum << endl;
 avg = sum / count;
 cout <<"The average of values entered is " << avg << endl;
 cout <<"The maximum value entered is " << max << endl;
 cout <<"The minimum of value entered is " << min << endl; 
 return 0;
}
#include <iostream>
#include <stdlib.h>
using namespace std;
int main(void) {
 double num, sum = 0, avg=0, max=0, min=0;
 int count = 0; // loop counter variable 
 while (count < 5) {
  cout <<"Enter number " << count << ":";
  cin >> num;
  sum = sum + num;	
  if (count == 0) {
   max = num;
   min = num;
  }
  if (num > max) {
   max = num;
  }
  if (num < min) {
   min = num;
  }
  count++;
 }
 
 cout <<"The number of values entered is " << count << endl;
 cout <<"The sum of values entered is " << sum << endl;
 avg = sum / count;
 cout <<"The average of values entered is " << avg << endl;
 cout <<"The maximum value entered is " << max << endl;
 cout <<"The minimum of value entered is " << min << endl; 
 return 0;
}