0

Hello

I'm writing a little selection sort program in C. Unfortunately the algorithm doesn't work correctly. After the selection sort some float numbers in the array are rounded down to whole ints.

Here's the example:

```
Code:
enter input filename:data
// input numbers
5.000000
7.000000
-48.400000
8.800000
8.400000
1.500000
8.400000
9.700000
35.000000
64.800000
OUTPUT after SELECTIONSORT
//soted output numbers
-48.400000
1.500000
5.000000
7.000000
8.000000
8.000000
8.000000
9.000000
35.000000
64.800000
```

So the problem is any decimal place on some numbers is discarded and the numbers appears as ints instead of floats.

Here are the snippets from my code:

```
int main()
{
double data [20000];
int dataCnt;
readFileIntoFloatArray(inputFilename,data,&dataCnt);
selectionSort(data,dataCnt);
int j;
printf("\n\n OUTPUT after SELECTIONSORT");
for (j=0; j<dataCnt; j++)
{
printf("\n %f \n",data[j]);
}
return 0;
}
void readFileIntoFloatArray(char filename[], double *dataArray,int *dataCnt)
{
int cnt=0;
int i=0;
FILE *fp;
fp = fopen(filename, "r");
while (!feof(fp))
{
fscanf(fp, "%lf", &dataArray[i]); // lf <<<<<<<
printf(" \n %lf \n",dataArray[i]);
i++;
cnt++;
}
fclose(fp);
*dataCnt=cnt;
}
void selectionSort(double *data, int count)
{
int i, j, min, temp;
for (i = 0; i < count - 1; i++)
{
min = i;
for (j = i+1; j < count; j++)
{
if (data[j] < data[min])
{
min = j;
}
}
temp = data[i];
data[i] = data[min];
data[min] = temp;
}
}
```

Any help with this would be much appreciated.

Thanks

R.