Hi there
I have written the following code to read some data from a file and bin the data into bins of equal size so I can plot this data easily.
#include <stdio.h>
#define N_HITS 1800
#define N_TIME_BINS 78
int main()
{
int i, time_bins[N_TIME_BINS],j;
double event;
double hit[N_HITS],value;
FILE *fp, *fw;
fp = fopen("damadata.txt" , "r");
fw = fopen("bindata.txt", "w");
for (i=0; i<N_HITS ; i++) /* enter loop to set array elements to zero*/
{
hit[i] = 0;
}
for (i=0; i<N_TIME_BINS ; i++)
{
time_bins[i] = 0;
}
if (fp != NULL)
{
for(i=0; i<N_HITS; i++) /*Enter loop to read all lines of data into hit array*/
{
fscanf(fp,"%lf\n", event); /*Each line is read into a seperate array element*/
hit[i]=event;
}
for (i = 0; i < N_HITS; i++) /*Now cycle through array containing data elements*/
{ /*Open Loop 1*/
for (j = 0; j < N_TIME_BINS; j++)
{
value = hit[i]; /*Value now equal to element i of array*/ /*enter loop to bin data into 77 bins of group of 60*/
if (value >= (j*60) && value < ((j+1)*60)) /*Tests if the value lies within a particular boundary*/
{
time_bins[j] = (time_bins[j] + 1); /*If it is add 1 element into bin j*/
}
else
{
time_bins[j] = (time_bins[j]); /*If not element j remains the same*/
}
} /*Close Loop 1*/
} /*Close Loop 2*/
for (j = 0; j <N_TIME_BINS; j++) /*Loop to print the number of data points in each bin*/
{
fprintf(fw, "%d\t" , j); /*Prints the bin number and the number of elements in this bin*/
fprintf(fw, "%d\n" , &time_bins[j]);
}
}
else {
printf("Error: The file you specified could not be found!");
}
fclose(fp);
fclose(fw);
return(0);
}However I keep getting the following error messages which cause my programme to crash and I am unsure how to fix them and wondered if someone could possibly help me? Many thanks :)
Building pellab.obj.
C:\Users\Toshiba\Documents\Pelles C Projects\pellab.c(27): warning #2234: Argument 3 to 'fscanf' does not match the format string; expected 'double *' but found 'double'.
C:\Users\Toshiba\Documents\Pelles C Projects\pellab.c(48): warning #2234: Argument 3 to 'fprintf' does not match the format string; expected 'int' but found 'int *'.
C:\Users\Toshiba\Documents\Pelles C Projects\pellab.c(8): warning #2116: Local 'event' is used without being initialized.
Building pellab.exe.
Done.