can anyone please tell me where is the problem in this code ?

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i want to scan 8 values from screen like - 1 2 3 4 5 6 7 8 and i want to print the sum of those 8 values and have to use array ...

C#

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

#define MAX_ITEM 8

int main()
{
	double x[MAX_ITEM],
		sum;
		
	int i;
	printf("enter 8 number seprated by blank ");
	scanf_s("%lf", &x[0]);
	sum = 0;
	for (i = 0; i <= MAX_ITEM; i++);
	sum += x[i];

	printf("sum  = %lf \n", &sum);

Posted 28-Dec-15 17:20pm

Member 12202551

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Comments

Sergey Alexandrovich Kryukov 28-Dec-15 23:26pm

"Like" does not define what and how you want to "scan". An example is not the definition.
What's the problem?
—SA

2 solutions

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hariharasudhan chandramurthy · Answer 1 · 2015-12-28T17:33:00

Solution 1

Hi, I feel removing semicolon (;) at the end of for should work.

C#

for (i = 0; i <= MAX_ITEM; i++)
	sum += x[i];

Thanks
Hariharasudhan C

Posted 28-Dec-15 17:33pm

hariharasudhan chandramurthy

Updated 28-Dec-15 18:00pm

v2

Richard MacCutchan · Answer 2 · 2015-12-28T23:11:00

The problem is that you only ever initialise the value of one element of your array. You should scan each value in turn inside your loop, ensuring that your loop ends when i is equal to MAX_ITEM. You also need to flush the input stream after each number, to clear the line end characters. So you should end up with something like:

C++

int i;
sum = 0.0; // clear the sum
for (i = 0; i < MAX_ITEM; i++) // ensure loop ends after MAX_ITEM elements
{
    printf("enter a number: ");
    scanf_s("%lf", &x[i]);     // get next value
    fflush(stdin);             // clear the input buffer
    sum += x[i];               // add to the sum
}
printf("sum  = %lf \n", sum);

As you can see the array x is not really necessary in this case as it is never used after reading a value. A single variable would do the job.