Thread: Changed Program, Now Getting Syntax Errors

Here's my program as it stands now. It's supposed to read in values from a file, which is supplied on the command line. If the values start with an alpha, they are ignored. Otherwise, they are supposed to be converted to floats, and then averaged.

Here's the code, currently giving me syntax errors on the bold line:

Code:

#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <math.h>

int main(int argc, char *argv[]){
    FILE* dataFile;
    FILE* outputFile; 
    char stringArray[1000][80];
    float floatArray[1000];
    int i = 0;
    int j = 0;
    int number_of_lines;
    int number_of_floats;
    float sum_of_floats;
    float average;
    
    dataFile = fopen(argv[1], "rb");
    if (dataFile == NULL){
       fputs("File error", stderr);
       exit(1);
       }

    while (1){
          fscanf(dataFile, "%s", stringArray[i]);
          if (stringArray[i][0] == EOF){
             break;
             }
          i++;
          }          
    fclose(dataFile);
    number_of_lines = (i+1);
    
    for (i=0; i<number_of_lines; i++){
        if (isalpha(stringArray[i][0])){
           i++;
           }
        else{
             floatArray[j] = strtof(&stringArray[i],&&stringArray[i][79]);
             j++;
             }
        }
    number_of_floats = (j+1);
    
    for (i=0; i<number_of_floats; i++){
        sum_of_floats += floatArray[i];
        }
    
    average = ((sum_of_floats)/((float)(number_of_floats));
    
    printf("%f", average);
    
    fclose(dataFile);
    getch();
    return 0;
}

The syntax errors are:

Code:

51 C:\Documents and Settings\Don\My Documents\Online Assignments\autocorrelation.c syntax error before '[' token 
61 C:\Documents and Settings\Don\My Documents\Online Assignments\autocorrelation.c syntax error before ';' token 
51 C:\Documents and Settings\Don\My Documents\Online Assignments\autocorrelation.c label `stringArray' used but not defined

And that's before I even access the file, which is of the form:

Code:

C HERE'S A COMMENT
C HERE'S ANOTHER COMMENT
234.5
-123.67
0.000
10.10
.
.
.

Am I just doing something completely stupid or what?

Each float occupies its own line, so what value can I assign to the second pointer so that it just moves to the next line naturally?

Probably not your main problem, but there's no guarantee that sum_of_floats is meaningful when your program starts. You also probably don't want to open your file in binary mode, if you're going to use fgets on it.